*ELEMENTARY PRINCIPLES OF CHEMICAL PROCESSES*

ERRATA -- 2005 Update Edition, Printings 1-3

Last updated: 11/17/13

**Changes from the text are underlined.**

- Inside front cover, Factors for Unit Conversions: In the "volume" category, change 220.83 imperial gallons to
__219.97__imperial gallons. - p. 18, Line 4 above Figure 2.5-1 ("for example, relatively..."): Change 0.30 to 0.
__98__and 0.55 to 0.__99__. On the next line, change 50 to__169__and 7.1 to__13__. On the first of the two plots [Data Set (a)], change*X*_{max}= 72% to*X*_{max}= 7__3__%. - p. 32, Prob. 2.15. In Line 3, add "Express
*g*in ft/s^{2}." - p. 36, Prob. 2.30. Line 1 should read "...from the given information
."*if possible* - p. 37, Prob. 2.32, last line of data table: Change 0.170 to
__0.169__. - p. 46, Line 1: Change
*m*(kg/s)^{2}, to*m*(kg/s),^{2}(that is, interchange the superscript and the comma). The superscript is a footnote reference, not an exponent. - p. 62, Line 4. Change "Celsuis" to "Cels
__iu__s" - p. 65, Prob. 3.1(c), Line 3. Insert a period after the second word ("stones"). Change the adjacent parenthetical statement to "(A
*stone*is a unit of mass equal to 14 lb_{m}. It is commonly used in England as a measure of body weight, which like the numerical equivalence between lb_{m}and lb_{f}is only valid at or near sea level.)" - p. 95, Test Yourself, Item 2, Line 1. Change "indicate bases" to "indicate
__d__bases." - p. 99, Item 2 in list, Line 2: ...must be specified before
__all of__the remaining variable values... - p. 101, Section 4.3e, Item 2(c), Line 2: Change (kg SO
_{2}/s) to (kg__H___{2}/s) - p. 114, Line 1: Change fresh food to fresh f
__ee__d - p. 143, Line 3. Change "nitric acid" to "nitric
__oxide__." - p. 171, Prob. 4.41(d), Line 3. Change "part (a)" to "part (
__b__)." - p. 175, Prob. 4.52, last line: Change "acid" to "
__aqueous hydrofluoric__acid" - p. 176, Prob. 4.55. The problem is technically correct but unnecessarily confusing. Click here for an improved version.
- p. 177, Prob. 4.55(d), Line 2. "Use an E-Z Solve parameter
__sweep to generate__a plot...." (Delete the extra "to" after "sweep") - p. 193, Step 2 of Example 5.2-1, Line 2. Change 5.3-a to
__5.2-3a__. - p. 201.

- Line before Eq. (5.3-2): Change "Truncating...yields" to "A simple approximation that uses only the second virial coefficient is"

- Eq. (5.3-2): Change the right-hand side of the equation to 1 + (BP/RT) - p. 202, bulleted paragraph at the top of the page.
__Delete everything after the first sentence__("Solution for*P*...closest to*V*.")_{ideal} - p. 202, Example 5.3-1

- last bulleted item: Equation (5.3-2) ==> P = RT/(V^-B)

- next line: = (0.08206 L-atm/mol-K)(122.4 K)/[1.50 L/mol - (-0.113 L/mol)] = 6.__23__atm

- last line of example: Change 8.7% to 8.__0__% - p. 202, last sentence (
*Perry's*...to 3-272): Replace with "Standard thermodynamics references (e.g., S.M. Walas,*Phase Equilibria in Chemical Engineering*, Butterworth, 1985) describe the BWR equation of state and give the eight constants for a number of gases." - p. 209, Figure 5.4-2. The figure has been misdrawn, with an extra horizontal grid line between
*z*= 0.9 and*z*= 1.0. The ordinate labels should not be changed, so that the curves still asymptote to*z*= 1.0 on the left. The resulting errors in reading the value of*z*for given reduced conditions are on the order of 1-3%. On the same figure, in the numerical labels on the reduced volume curves (dashed curves), the label between 3.00 and 2.40 should be 2.__6__0 (not 2.00). - p. 221, Prob. 5.33(c). After "2000." and before the footnote superscript on Line 2, add the sentence
__What is the most likely reason?__Then replace the footnote text with__Hint: Monochlorobenzene is a__*chlorinated hydrocarbon*. - p. 223, Prob. 5.36(b), Line 2: ...values determined in Part (
__a__). (not b) - p. 223, Prob. 5.37. In Part (b) and in the expression for
*y*_{A}in Part (c), put a dot over the*m*in*m*_{A} - p. 228, Prob. 5.51(b).

- Line 14 (begins with "K."): Change*K*x10_{pc}^{8}to*K*x10_{yc}^{8}. (The rest of the line is correct.)

- Line 15 (begins with "L."): Change the expression following the L. to (*K*_{p}P^{2}-*K*)x10_{pc}^{8}. (The rest of the line is correct) - p. 230, Prob. 5.55, Line 2. Change 5.3-4 to 5.3-
__2__ - p. 243, line above bottom equation (6.1-2): delete 1 r from "rearrrange"
- p. 256.

- Line 1: From Table 3-12 on p. 3-6__3__of the__5__th edition of...

- Line 1 under "SO_{2}Balance": Change*L*_{2}(lb_{m}) to*n*_{L2}(lb_{m}) (with a dot above the*n*)

- Footnote 4: Change 6th Edition to__5__th Edition and change 1984 to__1973__ - p. 264, Section 6.5a, Line 4: Change AgCO
_{3}to Ag_{2}CO_{3} - p. 283, Prob. 6.20: On Lines 4 and 5, change 16 psia to 16 psi
__g__. - p. 287, Prob. 6.32(a): In Line 1, change "methanol entering the absorber" to "
__gas__entering the absorber" - p. 290, Prob. 6.42: On the flow chart, label the second unit "Cooling, hydration,
__and oxidation__" (When calculating the amount of oxygen fed, it is important to remember that some is needed for the final stage of the process as well as in the converter.) - p. 296, Prob. 6.64:

- On the schematic of Stage*i*adjacent to the diagram of the column, change*y*+1 to_{i}*y*_{i}__-1__, and change*x*_{i}__-1__to*x*_{i}__+1__.

- In Part (b), add the sentence "__Assume the stage temperature is 50__^{o}__C__."

- In Part (d), Row 4 of the spreadsheet, change*y*to_{e}*y*. On the line below the spreadsheet, change_{N}*x*to_{i}*x*_{1}. - p. 298, Prob. 6.67(a), Line 2. In the expression for
*f*, make it (moles of vapor__produced__)/(mole of liquid__fed__) - p. 301, Prob. 6.73, "Data on Process Streams" to the right of the flowchart, bottom line: Change G
_{2}to G_{1} - p. 304, Prob. 6.85, Line 3: "to 1.00 kg of
__the solution__to raise the normal boiling point by__an additional__3^{o}C." - p. 324, figure in Example 7.4-2. The
*Q*arrow should be pointing into the box rather than coming out of it, and there should be dots above*Q*and*W*. - p. 338, third bullet. In Line 1, change the subscript of the summation sign from "out" to "in," and on Line 2 change the subscript from "in" to "out."
- p. 345, Prob. 7.22, Line 3: Change 2974 J/kg to 2974
__k__J/kg. - p. 351, Prob. 7.48, Line 4: Delete "&Delta
*H*= 2919" - p. 355, Prob. 7.54(b). In the figure, change 3.5 bar to 3.
__1__bar - p. 362, Item 6. In the closed system equations, remove the dots from above the two
*m*'s. - p. 416, Prob. 8.36. Delete the "Student Workbook" icon in the left margin.
- p. 420, Prob. 8.57(a). Change "molar" to "
__mass__" - p. 429, Prob. 8.67, last line before statement of Part (a): Add "The Antoine equation coefficients for propane are A=7.58163, B=1133.65, C=283.26."
- p. 457. In the expression under "Calculate Inlet Enthalpy," the integrand should be (
*C*)_{p}_{C2H5OH}*dT* - p. 458. In the third-last line of Example 9.5-3 (Δ
*H*=...), change the + in front of 2.813 to a -. - p. 460. In Eq. (9.5-3), change (
*n*) to (). In the line above the equation, change "__r__*n*moles of solvent" to "moles of solvent."__r__ - p. 477, Prob. 9.7(d), Line 3: Change the line to read "required heat of reaction,
__use tabulated heats of fusion, which you should assume to be temperature-independent__.") - p. 492, Prob. 9.38(b), Line 5: Change 51.5 to 51.
__37__. - p. 495, Prob. 9.50, Line 4: Change 841.9 kJ/mol to
__963.7__kJ/mol - p. 495, Prob. 9.51. In Line 2, add "Assume that the pressure is low enough for all the exiting water to be vapor."
- p. 524, Eq. (8): Change 93.3% to
__90__%, change 0.933 to 0.9__00__, and change 14.0 to__13.5__. On the 3^{rd}line down from Eq. (8), change the value of*n*_{8}from 14.0 to__13.5__ - p. 548, Example 11.2-1: On the flow chart, change the flow rate of the feed stream from 0.50 m
^{3}/s to 0.__0__50 m^{3}/s - p. 550, Eq. (11.2-1): Delete "(s
^{-1})" - p. 552, Example 11.2-2: On the flow chart, change the flow rates of the feed and effluent streams from 1.150 L/s to
__0__.150 L/s - p. 583, Step 12: On Line 4, change "Step 8" to "Step
__9__" - p. 586, Prob. 12.10, Line 1: Change "mole fraction" to "
__mass__fraction" - p. 636, Table B.2: In the formula for the heat capacity of hydrogen cyanide, change the value of
*c*x 10^{8}from 1.092 to__-1.092__ - p. 639, Table B.3: Change the vapor pressure at 33.4
^{o}C from 33.584 to 3__8__.584, and the vapor pressure at 95.2^{o}C from 938.59 to__6__38.59 - p. 656, TY on p. 49, Item 5: 50
__x10__^{3}__mol__/h (not 50 kmol/h) - p. 657, TY on p. 190, Item 1: On Line 3, change 200 g/s to
__255__g/s - p. 658, TY on p. 212, Line 1: Change 5.3-4 to
__5.4-3__ - p. 658, TY on p. 253, Item 2: On Line 1, change 760 mm Hg to
__600__mm Hg

**Answers to selected problems (p. 665-668)**

- Prob. 2.8(b). 2.
__5__kg (not 2.6) - Prob. 2.30(d).
*xy*= 2e^{3y/x}__[can't solve explicitly for__*y*(*x*)] - Prob. 2.32(b). 1
__10__kg/h (not 109) - Prob. 4.50(c). 0.87
__7__(not 0.875) - Prob. 7.32(b).
__12__kW (not 1.8) - Prob. 8.32(a).
__732__^{o}C (not 792) - Prob. 9.18(c). Q =
__11.86__kJ (not 11,863) - Prob. 9.30(c). 55.
__7__kmol recycled/h (not 55.9) - Prob. 9.38(c).
__35.4__mol O_{2}(not 9.0) - Prob. 9.62(a).
__119__% excess air (not 99%)

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