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Dates that corrections are posted are shown at the end of each line.

Table of Contents

- pg xvi, E.12, 'ou' should be 'uo' in Tetrafluoroethane (12/30/15)

Chapter 1

- pg 22, Eqn. 1.18 ... = -2mv(v/
**4**L)= -mv^{2}/**2**L (12/11/12)

Chapter 2

- pg 42, Eqn. 2.6, in the last argument on the right, V should not be underlined, nor have a dot above. (2/4/16)
- pg 55, Example 2.4, reference to 100 MPa should be replaced with 5MPa and,

V^{L}ΔP = 1.002 cm^{3}/g(5 MPa - 0.00234 MPa) = 5.008 MPa-cm^{3}/g for 5 MPa

... ΔH = (5.008 MPa-cm^{3}/g) ·(8.314 J/mole-K)/(8.314 MPa-cm^{3}/mole-K) = 5.008 kJ/kg (1/27/13) - pg 64, Eqn. 2.51 should say: Assume ideal gas behavior if
*P*<*P*and^{sat}*T*> 0.5 + 2_{r}*P*(2/9/16)_{r. }_{} - pg 81, In the 2nd line below the general equation with the scratches through terms, the energy balance should be d(nU) = -H
^{out}dn^{out}= Hdn. (3/16/12) - pg 87, center line of table, isobaric work is not dependent on (ig). (7/3/13)
- pg 90, P2.19 solution, (a) 12.5 MPa, (b) 17 kJ. (12/4/14)

Chapter 3

- pg 102, Fig. 3.3, both equations for Q
_{cond}should include a minus sign since heat is removed. (1/16/13) - pg 117, 3rd line of the example, the equation should read -221 -285.8 -2(-249.4) = -8; the + in the text should be a -. (1/25/12)
- pg 117, part (c). The heat capacities for vapor and liquid were switched when calculating the steps. The results should be (A) –215.7 + 2.4 –30.2 + 3.3 = –240.2 kJ/mol; (MO) –178.3 + 17.3 – 42.7 – 11.6 = –215.3 kJ/mol; (W) –241.9 + 2.5 – 40.7 – 1.5 = –281.6 kJ/mol. This results in Q = (20(–240.2) + 40(–215.3) + 40(–281.6)) – 100(–240.2) = –660 kJ/h. One reason that parts (a) - (c) result in such different heat transfer is that the difference in the heat of formation of vapor and liquid MO at 25C matches the heat of vaporization at the normal boiling point and the difference would be expected to be larger. When a discrepancy like this arises in the overall heat transfer using different methods, the engineer should research the source of the thermochemical data and/or make measurements and/or design for the worst case. (2/28/12)
- p118, first line under heading 'Graphical Visualization...' should read: “the energy balance is presented by
~~Method 1~~**the Heat of Reaction Method**(Eqn. 3.51)...”(7/24/14) - p124, problem 3.5 “The tops of the first column,
**at 36C,**are sent…” (4/9/15) - pg 125, problem 3.6, the heats of formation are at 25C. A conversion of 80% is impossible. The conversion should be 30%. (1/25/12)
- p125, problem 3.7 “Benzene and
~~benzyl chloride~~**chlorobenzene**…” Also, at the end of the problem statement, determine the heat duty for the reboiler**(kJ/(mol inlet flow))**. (7/24/14)

Chapter 4

- pg 135, footnote 9. 'binomial distribution' should be 'binomial coefficient'. Footnote 10, add, 'It is also the multinomial coefficient.' (10/5/12)
- pg 141, Figure 4.2 axis label should be log10<qM> (2/1/13)
- pg 145, Example 4.4, part (a), the saturated liquid volume 0.001186 should be 0.001286. (2/24/13)
- pg 145, Example 4.4, part (c) , first line replace U
_{d}with U_{a}. (7/24/14) - pg 145, Example 4.4, Signs are wrong on some of the work terms. Part(a), last line, W
_{EC}(a->b) = -PΔV = -5(0.0394 – 0.001286)*1000 = -191.1 J/kg; (c) last line, W_{EC}(d->a) = 1148.21 - 1082.13= 66.08 kJ/kg; (d) 3rd line, H_{d}- H_{c}= -1382.**8**1 kJ/kg, last line, W_{EC}(c->d) = -1.0(35.2 – 167.8) = 132.6 MPa-cm3/g = 132.6 kJ/kg; (e) first line, W_{net}= (–264.67+66.08–191.1+132.6) = –257.1 kJ/kg, last line, insert minus before 257.4. (2/5/16) - pg 151, Example 4.6, second line, Compute the change in
~~enthalpy~~**entropy**…(7/24/14) - pg 156, Eqn. above 4.37, Sgen,W should be Sgen,wall (12/30/15)
- pg 163, Example 4.12, In the second and third line, the T for the Cp should be given as 1273K. Cp = 44.37 J/mol, R/Cp ~ 8.314/44.37 = 0.1874. Then (1.1)^(-0.1874)=0.9823 -> T2 = 1273(0.9823) = 1250.5K. (7/24/14).
- pg 167, Fig. 4.8, caption should say ‘showing lines of constant temperature and pressure’. (2/7/13)
- pg 172, Example 4.15, line 5 would be better expressed as: (3/21/12)

...Then W_{S}= –923.5; q' = (8.0041 − 0.6492)/7.4996 = 0.9807;

So H1' = 191.8 + 0.9807(2392)=2537.6; W_{S}' = 2537.6 − 3483.4 = –945.8;

W_{lost}= 945.8 – 923.5 = 22.3; η_{E}= –923.5/(–923.5 – 22.3) = 97.7%. - pg 176, last paragraph, second line. The proof is provided in Section 17.16 rather than online. (3/3/12)
- pg 189, problem 6.1 should be moved to 4.1, problem 4.1, line 6, equation should read ΔU
^{vib}/(RT) = βε/(exp(-βε)-1). Line 8 equation should read U^{ig}/(RT) = 5/2 + βε/(exp(-βε)-1). (12/30/15) - pg 191, problem 4.10, use Cp = 7R/2, for parts (a) - (c) create a P-T plot instead of a P-V plot. (10/5/12)
- pg 196, problem 4.36 should reference problem 4.35 instead of 4.33. (3/8/12)

Chapter 5

- pg 201-202, Example 5.1. The efficiency of the turbine should be specified as 90% on pg 201. The calculations on pg 202 reference Ex. 4.13(c) that used 90% efficiency. Also the values are marginally different in Example 5.1 due to different round-off (-959 vs. -958 for the work and the H4 and H4' values in the Ex 5.1 table). (2/13/13)
- pg 204, Example 5.2. The efficiency of the first turbine should be 85% and the efficiency of the second turbine should be 90%. See the errata for pg 201. (2/13/13)
- pg 206, The problem is to be solved given the conditions in the table cells with standard borders.(7/24/14)
- pg 210, last eqn in Ex. 5.4, the last values in the line should be 0.8(3.87) = 3.10. (2/7/13)
- pg 212, top paragraph, last sentence. 'must be warmer' should say 'must be colder'. (3/2/12)
- pg 238, Example 6.6, problem statement (b), the last term of the vdw EOS should be -a/V
^{2}. (4/18/17)

Chapter 6

- pg 242, Example 6.9, Just after "changing order of differentiation" the quantity inside the square brackets should be (∂S/∂V)
_{T}not (∂S/∂T)_{T}.(3/4/13) - pg 248, problem 4.1 should be moved to 6.1. problem 6.1 (ie. for CO2) should then say, ...Consider the vibration at eq/k = 952K (546cm–1).

(a) Plot Cvig/R versus T for CO2 in the range 200–400 K using NIST Webbook data. Plot the polynomial expression in the back of the book on the same chart as a dashed line. Adapt the analysis of problem 4.1 to the vibration at 952K while noting that this vibration occurs twice. Plot your vibrational result as a solid line.

(b) Use your Internet search skills to learn the wavelength range of the IR spectrum. How many wavelengths are there? What fraction does the wavelength at 546cm–1 comprise? If the Earth’s atmosphere was composed entirely of CO2, what fraction of IR energy could be absorbed by CO2? - pg 249, problem 6.5(b),(c) should reference problem 6.10. (2/11/13)

Chapter 7

- pg 262, Eqn. 7.18 is truncated. There should be a Tr inside the square root with alpha. (3/6/12)
- pg 259, Eqn. 7.5 is more clearly written as Z = 1 + BP/(RT), Eqn. 7.6 as Z = 1 + BP/(RT), last equation on the page as B(T)Pc/(RTc) = ... (7/6/13)
- pg 263, Equations are best understood with additional parentheses: 7.20 Z = PV/(RT) = P/(ρRT); 7.21 A = aP/(R
^{2}T^{2}); 7.22 B = bP/(RT); 7.23 aρ/(RT) = A/Z. (7/7/13) - pg 273, Equations are best understood with additional parentheses in 2nd paragraph of text: third line, Z = 1/(1-η
_{P}) - aη_{P}/(bRT); seventh line, ε/(kT); last line, β = 1/(kT). (7/7/13) - pg 279-80, Example 7.10 has several numerical errors. An updated pdf page is available. Click here. (9/27/13)
- pg 295, problem 7.18(a), delete 'c' from the list of variables. (2/20/12)
- pg 297,298 problems 7.24 and 7.25, the values of -U/ε should be labeled -(U-U
^{ig})/(N_{A}*ε) and should be multiplied by 10. e.g. 1.241 should be 12.41.(3/17/12) - pg 298, problem 7.27, last line, replace bρ with ρN
_{A}σ^{3}. (12/30/15)

Chapter 8

- pg 307, Example 8.1, last three lines, Cv/R is given as 4.3 but this is really Cp/R. It should say: (3/21/12)

∆U = –2.203(8.314)220 + (4.3 – 1)· 8.314(220 – 200) + 0.00931(8.314)200 = –4030 + 549 + 15 = –3466 J/mol.

The ideal gas part (549) is 14% as large in magnitude as the State 2 departure function (–4030) for this calculation. Clearly, State 2 is not an ideal gas. - pg 309, Eqn. 8.23, the constraint of constant density in the partial derivative is omitted, and it should read [∂Z/∂T]
_{ρ}. (12/31/12) - pg 311-2, in the integral at the bottom of 311 and top of 312, the constraint of constant density is omitted, and it should read [∂Z/∂T]
_{ρ}. (12/31/12) - pg 313, The unnumbered equation above equation 8.33, the exponent is wrong on the denominator of dB
^{1}/dT_{r}which should read dB^{1}/dT_{r}=0.7224/T_{r}^{5.2}. (10/1/12) - pg 316, Eqn 8.35, In future printings, to avoid confusion, the last arguments beginning with A/B/sqrt(8) will be moved in front of ln. In the equation above 8.35, the terms in the last set of brackets will be moved in front of ln. (10/6/12)
- pg 317, Eqn. 8.37, the term κsqrt(T
_{r})/sqrt(α) should be (1+ κsqrt(T_{r})/sqrt(α)). (10/6/12) - pg 318, Eqn. 8.38, the term -ln(Z-B) should be +ln(Z-B). (10/6/12)
- pg 325, practice problem 8.4, Answer should replace Boltzmann's constant (k) with
*R*in denominator because*N*is applied in numerator. (3/13/17)_{A} - pg 329, footnote 3 should reference problem 7.6. (4/18/17)
- pg 332, problem 8.37, the values of -U/ε should be labeled -(U-U
^{ig})/(N_{A}*ε) and should be: 2.99, 3.04, 3.23, 3.47, 3.76. (4/12/12)

Chapter 9

- pg 363, Problem 9.1, next to last line, 10 cm x 0.01 cm blades. (12/30/15)
- pg 364, problem 9.14, perform the calculations at 80
^{o}C. (11/27/12) - pg 365, problem 9.18. Because problem 7.18 was changed, this problem does not make sense. An updated pdf of the page is available. Click here. (2/20/12)

Chapter 10

- pg 373, Table 10.1, FL and FA Criteria. The 1 in the denominator should not have a subscript (1/27/13)
- pg 374, first paragraph, last line, the iterative methods are covered in online supplements rather than appendix A. (4/11/12)
- pg 378, last paragraph, second/third line, V/F is the
**vapor**-to-feed ratio. (3/11/13) - pg 379, Eqn. 10.17 The K
_{i}terms in the denominator should be K_{1}and K_{2}respectively. (3/11/13) - pg 386, Ex10.2, a revised page is available, click here. Solution2, 2nd paragraph... We begin by finding the enthalpy of the feed relative to the elements at 25C, noting that it is a liquid ideal solution. H
^{F}= H^{L}(70) = Σ(x_{i}*(ΔH^{o}_{f,i}+Cp^{ig}*(T-T_{R})-ΔH_{i}^{vap})) = 0.5*(-200940+5.28*8.314*(70-25)-**35976**) + .5*(-234950+7.88*8.314*(70-25)-**38595**) = -**252769**. This takes care of the first term in Eqn. 10.19. Noting that the feed is liquid~~and the temperature drop is small~~, we might suspect the flash to be mostly liquid. Performing a bubble-temperature calculation at 200 mmHg gives T=40.00C and HL(40) = -**256901**~~such that~~**and with no vapor stream results in**Q = -**4132**J/mol. The temperature must be slightly higher to move Q toward zero. Suppose we “guessed” that the temperature is**40.23**C. Then the flash calculation gives xE = 0.**5173**, yE = 0.**3516**, V/F = 0.**1042**, HL(**40.23**)= -**257,502**. The formula for HV is similar to that for HL but omits the HiVap contribution and replaces xi with yi, so HV(**40.23**) = -**212,088**. Following Eqn. 10.19, Q = (1-0.**1042**)*(-**257502**) + 0.**1042***(-**212088**) +**252769**= -**0.1**J/mol. We may assume that -**0.1**J/mol is sufficiently close to zero. - pg389, Eqn. 10.31, the LFL should be divided by 100 since it is in percent, Σ(y
_{i}/(LFL_{i}/100))=1. (5/16/12) - pg 402, Eqn. 10.56, before last summation, replace R with RT. (12/30/15)
- pg 408, problem 10.6, the flash drum should be at 0.05 MPa.(10/2/12)

Chapter 11

- pg 417, example 11.2, 2nd line should reference Fig 11.1. (4/18/17)
- pg 423, last paragraph before Section 11.3, line 4, "In Section 13.1..." should be "In Section 12.5..." (12/30/15)
- pg 456, problem 11.4, mention of Scatchard-Hildebrand is premature. Change "Assume the Scatchard-Hildebrand model is to be applied." to "The two-parameter Margules model is to be applied with A
_{12}= 1.85, A_{21}= 1.64." (2/20/12) - pg 458, problem 11.11, first line: replace P-x-y with
**T**-x-y. (8/21/12) - pg 460, problem 11.23 should say, "Assume MAB solution thermodynamics with G
^{E}/RT=ΣΣx_{i}x_{j}A_{ij}..." (1/27/13) - pg 460, problem 11.25. The table is superfluous and will be deleted in subsequent printings. (2/20/12)
- pg 462, problem 11.28(c), make a separate plot instead of adding to the same plot.(11/27/12)

Chapter 12

- pg 472, the solubility parameter for pyridine should be 21.57. (4/7/15)
- pg 487, swap the column labels for B and W. There are minor roundoff issues in some of the tabulated values in the example. (12/11/14)
- pg 491, Eqn. 12.61, UE - RT... should be UE + RT... (12/30/15)
- pg 494, problem P12.1, using shortcut vp for acrolein and Antoine for water, (a) A12 = 1.91, A21 = 2.42; (b) T should be 325.55K rather than 326.55K, P(bar) = {0.653, 0.998, 1.03}. (10/22/14)
- pg 494, problem P12.4, eq. 12.64, delete the delta in the denominator of the second term. (12/11/14)
- pg 495, problem 12.3(a) should reference 'Eqn.' 10.32, not 'problem' 10.32. (2/21/12)

and should say, "The liquid phase can be modeled by the van Laar model with V2=1.3V1." (1/27/13) - pg 496, problem 12.9 will reference problem 11.10 in subsequent printings. (2/20/12)

Chapter 13

- pg 507, Eqn. 13.28, G
^{E}should have underbar. (10/25/15) - pg 509, Eqn. 13.35, NRTL eqn. for γ
_{2}, in the second term, the numerator (G_{21})^{2}should be (G_{12})^{2}. (3/24/13) - pg 528-530, Nc has been changed to N
_{c}(using subsript c) to be consistent with earlier sections of chapter 13. On pg 529, statements 6w and 6u, the summation variable should be j but it is chopped off and looks like i. (3/3/12). - pg 534, problem 13.6 should reference problem 10.14. (2/20/12)
- pg 535, problem 13.7 should reference Section 10.5 instead of problem 10.14. (2/20/12)
- pg 535, problem 13.10, reference to an equation of state is premature. The problem is revised to use only UNIFAC. An updated pdf of the page is available. Click here. (2/20/12)

Original wording, 1st printing:

13.10 Activity coefficients are an implicit part of the equation of state but they can be determined explicitly by comparing the definitions of the K-ratios. Using the kij value fit at xe = 0.415, compute the activity coefficients implied by the Peng-Robinson equation for the benzene + ethanol system and compare them with the UNIFAC values and the values determined from the experimental data of Brown and Smith (1954) cited in problem 10.2, using plots of activity coefficient versus composition.

Revised wording:

13.10 Consider the experimental data of Brown and Smith (1954) cited in problem 10.2. Prepare a P-x-y plot and a plot of experimental activity coefficients vs. composition. Then use UNIFAC to predict the activity coefficients across the composition range and add the calculations to the plots. - pg 537, problem 13.18 should reference problem 11.11. (2/20/12)

Chapter 14

- pg 541, example 14.2, third text line from the bottom, 'Using Eqns. 11.46 and 11.47' should read 'Using Eqns.
**12.36**and**12.37**'. (4/9/13) - pg 566, Eqn 14.26, RT lnK should be lnK, (delete RT). (7/22/13)
- pg 566, 567, units on Eqn 14.27 are (K), units on Eqn. 14.28 are cal/mol, units on Eqn 14.30 are (g/cm
^{3}). Also, footnote 3 should be Won, K.W. 1986, Fluid Phase Equil. 30:265. (3/26/12) - pg 572, Table 14.2, the β and α should be swapped in the last two columns. E.g. phenol should be more acidic than basic. (1/27/13)
- pg 575, problem 14.19, second line, should say, "...plot the spinodals (T versus Φ
^{α}, Φ^{β})." (1/27/13) - pg 576, problem 14.20, the liquid and solid volumes are switched in part (c). (3/4/13)

Chapter 15

- pg 593-4, next to last equation above ‘Substituting...’ on 593 the parentheses are misplaced and Eqn. 15.34 the placement of the last term in brackets may be confusing. The ln applies to only the term including [(1+(1+sqrt(2))bρ)/(1+(1-sqrt(2))bρ)] or the analogous expression with Z and B. Also, on pg 593, eliminate the leading ( and the mating ). (12/30/15)
- pg 608, problem 15.15. A mixture containing 5 mol% ethane, 57 mol% propane, and 38 mol%
*n*-butane is to be processed in a natural gas plant. Estimate the bubble-point TEMPERATURE, the liquid COEXISTING VAPOR compositionS, and*K*-ratios of the coexisting vapor for this mixture at all pressures above 1 bar at which two phases exist. Set*k*ij = 0. Use the shortcut*K*-ratio method. Plot ln*P*versus 1/*T*for your results. What does this plot look like? Plot log*K*i versus 1/*T*. What values do the*K*i approach? (11/8/2014)

Chapter 17

- pg 643, First line of the paragraph
**Basis**. 'Note the excess hydrogen at the feed conditions' should be 'Note the excess**CO**at the feed conditions'. (10/5/12) - pg 649, at end of first paragraph, "state if aggregation" should be "state of aggregation." (5/9/12)
- pg 650, middle of first paragraph under "nonstoichiometric feed," it says "repeat example 17.1 with stoichiometric feed (1 mol
**CO2**and 2 mole H2)" where it should be "repeat example 17.1 with stoichiometric feed (1 mol**CO**and 2 mole H2)". The conversion for stoichiometric feed should be 40.6%. This reaction also includes an important pressure effect, and the discussion has been modified. Click here. (5/14/12) - pg 656, Section 17.9 first paragraph, 4th line. Exothermic reactions have a
~~negative~~positive slope and endothermic reactions have a~~positive~~negative slope. (6/1/16) - pg 657, Fig. 17.2, the y-axis should be lnK instead of log
_{10}K and adjustments are needed to the curves. Approximate values can be estimated from the existing figure by adding units to lnK to each (reaction) as: +9 for (CO2+4H2=CH4+2H2O,CH4=C+2H2), +6 (CO2 + C = 2CO), +3 for (C+H2O=CO+H2, CO+H2O = CO2 + H2, 0.5 O2 + C = CO, CO2 = CO + 0.5 O2). Updated pages are available. Click here. (12/9/12) - pg 662, first paragraph, 3rd line from bottom, replace 'energonic' with 'endergonic'. (4/12/12)
- pg 664, the discussion with methyl chloride in equations 17.43-45 is flawed. It has been replaced, click here. There is no equation 17.45 after the revision, and the remaining equation numbers are unchanged. (12/30/15)
- pg 665,666. The energy balance should have used TR = 600K for the heat capacity integrals because the ΔH
^{o}used this TR. The discussion and results have been updated and the shortcut agrees well with the detailed van't Hoff. Updated pages are available. Click here. (4/10/12) - pg 671, Eqn. 17.64. The term with partial pressures should be multiplied by RT. The exponent of the last term should have a minus preceeding the summation. (4/17/12)
- pg 674, Example 17.12, last line of the equation, 1/3 of the way down the page, insert the term for H2O before the equals sign, "+ 10ln(0.9009*1)". Also, the y-axis on the plot should be
*G*/*RT*. (4/29/12) - pg 691, problem 17.25(d). Replace T
_{R}of problem 17.24 with T_{m}. The equation should be written in terms of T_{m}. (7/6/13) - pg 692, problem 17.28. Add: The thermodynamic data are per mol of surfactant, thus model the reaction written as S <--> (1/n) M
_{n}. (7/6/13)

Chapter 18

- pg706, Table 18.2, footnote (a), In both instances where [HCO
_{3}^{-}] appears, it should be multiplied by [H^{+}], e.g. it should appear as [HCO_{3}^{-}][H^{+}]. (4/21/12) - pg 716, first line, 'with' should be 'without'. (4/12/12)
- pg 718, five lines below Eqn. 18.59, change wording to become "
**On**~~From~~the right-hand side, the term 5E-3~~on the left side~~dominates at~~all~~pH < 6. Solutions at high pH are impossible because the decreasing~~right~~**left**-hand side is too small to balance the value of 5E-3 plus increasing concentrations of the negative phosphate**and hydroxide**ions in the~~balance~~**proton conditon**. Therefore, the solution must be at low pH where the concentration of negative phosphate**and hydroxide ions**in the**proton condition are**~~balance is~~small. "(10/7/12) - pg 726, last two lines of Example 18.8, should read "thus the total solubility is
**2**.94(0.018) = 0.0529 mol/L, or 0.0**529**(306.27) =**16.2**g/L." (4/25/12) - pg 728, just above Eqn. 18.85, strike the words, 'exergonic reactions' and 'endergonic reactions'. Whether a reaction is exergonic or endergonic is based on the standard state value, but the actual direction depends on ΔG, not ΔG
^{o}. (3/3/12) - pg 730, Example 18.9, first paragraph of solution, last line, replace 'loosing' with 'losing'. (2/8/12)
- pg 748-9. The variable P
_{i}in the last equation of pg 748 and on the first line of pg 749 and the subscripts in the last equation of the example for ΔG, represents the total of ATP in all forms. In future printings, P_{i}will be replaced by*C*except in the equation for_{}ΔG it will be replaced by ATP. (12/31/12) - pg 761, problem 18.1. Part (b), calculate at 760 mmHg, part (c) calculate at 25
^{o}C.(12/31/12) - pg 762, problem 18.8. the problem has insufficient carbon to saturate the solution at the specified partal pressure. Revise the amounts of solutes in the second sentence, "The amount of sodium carbonate is such that the total sodium concentration is
**0.05**m and the total acetate concentration is**0.05**m. (12/31/12) - pg 763, Equation 18.175 should have exponent 'y' on [H
^{+}], as in [H^{+}]^{y}. In part (d), the values of Q should be Q_{11}and the statement is thus revised to ask: (d) For Fe^{2+}, log Q_{11}= –9.5, and for Ni^{2+}, logQ_{11}= –10.5 and the hydrolyzed ion is soluble for each. Repeat (a) for these ions but relate pH to the ratio of ion concentrations. (1/10/13) - pg 764, problem 18.13(a), last line, the primary alcohol should have a methylene, e.g. "(ketone), -C
**H2**OH(alcohol), -CH2-, -CH3, CH4". (12/31/12) - pg 765, problem 18.16(a) should ask to derive Eqn.
**18.90**, not 18.50. (12/31/12) - pg 765, problem 18.17, should be at 25
^{o}C.(12/31/12) - pg 765, problem 18.22, should be at 25
^{o}C.(12/31/12)

Chapter 19

- pg 776, improve wording. First, in reference to systems that can only solvate (not associate), the observed activity coefficients of
**A**must be less than one because x_{AM}< x^{o}_{AM}x_{A}when B is present. Second, for systems in which~~one~~component**A**associates and**B**~~the other~~can neither associate nor solvate, the observed activity coefficients**for A**must be greater than one because x_{AM}> x^{o}_{AM}x_{A}when B is present owing to the interference of B with A from dilution. - pg 777, Eqn. 19.25, first two terms should be x_A*x_(BM) - x_B*x_(AM) + ... (12/30/15)
- pg 777, Eqn. 19.28, first two terms should be y_A*y_(BM) - y_B*y_(AM) + ... (12/30/15)
- pg 779, Example 19.3 solution. First line should reference Eqn. 19.24 and 19.25. In the margin note, new software names are IdChemTheory.xlsx, IdChemTheory.m. (2/4/16)
- pg 780, Eqn. 19.33, the leading terms should be x_A*x_(BM) - x_B*x_(AM) + ... (12/30/15)
- pg 780, Eqn. 19.36, the leading terms should be y_A*y_(BM) - y_B*y_(AM) + ... (12/30/15)
- pg 783, Eqn. 19.42, replace P with 2*P and replace Delta with 2*Delta. (12/30/15)
- pg 783-4, add carets to all phi. Two different phi symbols were inadvertently used and should be the same. Eqn 19.42 insert 2 on last two equalities. Eqn 19.45, for both terms with the summations, the denominator should be RT. (7/24/14)
- pg 783, Eqns. 19.41-43, where P appears, it is more clear to write P/P
^{o}. (2/4/16) - pg 784, Eqn. 19.46 is more clear if each denominator includes P
^{o}. (2/4/16) - pg 785, Eqn. 19.49, left side should be K
_{a}RT/P^{o}. In the line immediately below, K^{C}= K_{ac}RT_{c}/P^{o}and ε/k = ΔH_{Tc}/R. (2/4/16) - pg 785, line below Eqn. 19.51, G
^{assoc}should be G. (10/5/12).^{chem} - pg 786-7, Eqn 19.59, Achem should be underlined. Eqn. 19.60 change -ln(nT/n0) to +ln(nT/n0). In Eqn 19.61, change in the rightmost terms +(1-X)/2 to -(1-X)/2. Eqn 19.63 should read -∂X/∂ηp=4XΔ∂X/∂ηp + 2X2∂Δ/∂ηp⇒ (1 + 4XΔ)∂X/∂ηp=-2X2∂Δ/∂ηp. The following two lines, insert 2 before each X2Δ. Eqn. 19.64, add a minus to the rightmost term. In the line above 19.66, Zchem = -(1-X)/[2(1-ηp)] (7/24/14).
- pg 788, replace Delta with 2*Delta five times: box in lower left of figure 19.8 (2x in equation for x_M), Example 19.4, lines 1 and 4. (12/30/15)
- pg 789, Eqn. 19.71 replace K with Δ. (12/29/15)
- pg 790, Eqn. 19.75, for solving for X
^{A}_{i}, this is rearranged, X^{A}_{i}= 1/(1 + Σ_{j}x_{j}N_{d,j}X^{D}_{j}Δ_{ij}^{AD}). The sum is over interacting donor sites, xj is the apparent mole fraction of the site host. Analogous equations are written for the donors where the summation is over interacting acceptor sites.(12/29/15) - pg 791, Eqn. 19.77, the sum is over interacting donor sites, xj is the apparent mole fraction of the site host. For clarity, each of the three terms of the form ln(X_i^B) + (1-X_i^B)/2 should have brackets surrounding. (12/30/15)
- pg 792, two lines above Eqn. 19.78, in the equation with K
_{a}, replace P with P/P^{o}. (2/4/16) - pg 792, above Eqn. 19.78, should say, For molecules with one donor and one acceptor site, the fraction of unbonded acceptors is the joint probability that the acceptors and donors are both unbonded, and since by mass balance X
^{A}= X^{D}, then n_{M}/n_{o}= X^{A}X^{D}= (X^{A})^{2}= (n_{M}/n_{T})(n_{T}/n_{o}) = x_{M}(n_{T}/n_{o}). We can write the equilibrium relation for i-mer formation using 19.43 as (x_{i}/(x_{M}x_{i-1}) = ((ϕ_{M}ϕ_{i-1})/(ϕ_{i}P^{o}))PK_{a,i}= (Δ)(n_{T}/n_{o}). Combining the probability and equilibrium relations, x_{i}= x_{i-1}(X^{A})^{2}Δ. A recursive relation results, x_{i}= x_{M}((X^{A})^{2}Δ)^{i-1};. Now consider the balances (2/4/16) - pg 792, the equation after Eqn. 19.78 should be n
_{0}= n_{T}Σ i·x_{M}((X^{A})^{2}Δ)^{i-1}= x_{M }n_{T}[1 + 2((X^{A})^{2}Δ) + 3((X^{A})^{2}Δ)^{2}+ 4((X^{A})^{2}Δ)^{3}+ …] (7/26/14) - pg 792, Eqn. 19.79, should say, n
_{T}x_{M }[1 + 2((X^{A})^{2}Δ) + 3((X^{A})^{2}Δ)^{2}+ 4((X^{A})^{2}Δ)^{3}+ …] = nT x_{M }[1/(1 - (X^{A})^{2}Δ)^{2}] and, n_{o}/n_{T}= x_{M }[1/(1 - (X^{A})^{2}Δ)^{2}] (2/4/16) - pg 794-799, Numerous modifications and clarifications required substantial changes in the text body, renumbering of equations and recalculations in examples. For revised pages, click here. (6/17/16)
- pg 800, Eqn. 19.114, Z = mZ
^{HS}+ (1-m) + (m-1) +**(m-1)**Z^{bond}+ mZ^{att}+ Z^{chem}

Z = 1+ m(Z^{HS}-1) + mZ^{att}+ (m-1)(1+Z^{bond}) + Z^{chem}

Z = 1+ m(Z^{HS}-1)**- (m-1)(ρdlng/dρ)**+ mZ^{att}+ Z^{chem}= 1+**m(Z**+^{HS}-1)**Z**+ mZ^{chain}^{att}+ Z^{chem }.(11/20/12) - pg 800, Example 19.8, line above "Substituting" should say,

Then, η_{p}d**ln**/dη*g*_{p}= η_{p}**{-0.5/(1-η**= η_{p})^{3}+3(1-η_{p}/2)/(1-η_{p})^{4}}/*g*_{p}[**-0.5/(1 – η**]_{p}/2)+3/(1–η_{p})

line below "Substituting," should say, Z^{chain}=**-(m-1)(5η**]. (11/20/12)_{p}-2η_{p}^{2})/[(2-η_{p})(1-η_{p}) - pg 801&802, change superscript "assoc" or "C" to "chem" in all equations. (11/20/12)
- pg 804, Figure 19.12, the dash line corresponds to PR and the solid line to ESD. (4/17/12)
- pg 806, problem 19.4, the value for G
^{E}should be negative, i.e. -0.91 kJ/mol. (3/1/12) - pg 809, problem 14, replace reference to Eqn 15.73-76 with citation "21". (1/27/13)
- pg 809, problems 15-16 for the ESD, add citation "35". Add footnote: 35. Suresh, S.J., Elliott, J.R. 1992, Ind. Eng. Chem. Res. 31:2783-2794. (1/27/13)
- pg 809, problem 17, the problem statement should say "..., use the ESD EOS with c = q = 1 for both monomer and hexamer to fit the vapor density data as accurately as possible in the least squares sense and estimate the corresponding value of Zc." (1/27/13)
- pg 809, problem 18, the problem statement for part (a) should say "... equation of state, with Z
_{c}=0.375(Z_{c}^{expt}/Z_{c}^{homo}) where Z_{c}^{homo}is the Z_{c}of the homologous n-alkane (e.g. ethane for methanol)." For part (b) it should say"Assuming an enthalpy of hydrogen bonding of 24 kJ/mole, calculate the acentric factors for methanol and ethanol according to the vdw-HB EOS."(1/27/13) - pg 810, problem 19, the problem statement should say "Derive the association model for the Peng-Robinson model, with Zc=0.3074(Z
_{c}^{expt}/Z_{c}^{homo}) where Z_{c}^{homo}is the Zc of the homologous n-alkane (e.g. ethane for methanol)..." (1/27/13) - pg 810, problem 20, the problem statement for part (a) should say "Recommend whether NAεHB/R = 4000 K or 10000 K fits dimerization best." Part (c) should be deleted. (1/27/13)
- pg 810, problem 21, Part (b) should be deleted. (1/27/13)

Appendix B

- pg 823, Eqn. B.42, equation for Q should be Q= (-q/2 - sqrt(R))^(1/3) instead of Q=(+q/2 - sqrt(R) )^(1/3). (4/22/13)
- pg 845 - id 1562, Chlorobenzene, correct values are ΔH
_{f}= 51.09 kJ/mol, ΔG_{f}= 98.29 kJ/mol. (7/24/14)

inAppendix E

- pg 845 - id 1562, Chlorobenzene, correct values are ΔHf = 51.09 kJ/mol, ΔGf = 98.29 kJ/mol. (7/24/14)
- pg 852, Fourth equation for Ruthenium should have four electrons, H
_{2}RuO_{5}+ 4H^{+}+**4**e^{-}<=> RuO_{2(s)}+ 3H_{2}O. (12/31/12) - pg 867 - correct spelling is Fluoroethane.(7/24/14).

Front End Paper

- In the Complete Energy Balance, the velocity in kinetic energy should use
*v*instead of*u*which occurs three times. (2/17/15)

Back End Paper

- Units for solubility parameter, acidity, and basicity parameters should be (J/cm
^{3})^{1/2}. (4/10/12)

### Errata for Coursepack

The following errors exist in the coursepack printing, but were fixed before the text went to the printer.

Chapter 3

- pg 115, The line above Eqn. 3.51 should read 'Heat of Reaction'. (1/25/12)