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 = 73%.

• p. 32, Prob. 2.15. In Line 3, add "Express g in ft/s²."

• 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. 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. 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 SO₂/s) to (kg H₂/s)

• p. 114, Line 1: Change fresh food to fresh feed

• p. 143, Line 3. Change "nitric acid" to "nitric oxide."

• p. 157, Prob. 4.6(b). Change "mole fractions" to "mass fractions" on Lines 1 and 3.

• 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. 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 2.60 (not 2.00).

• p. 221, Footnote 14. 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_pcx10⁸ to K_ycx10⁸. (The rest of the line is correct.)
  - Line 15 (begins with "L."): Change the expression following the L. to (K_pP² - K_pc)x10⁸. (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 under "SO₂ Balance": Change L₂(lb_m) to n_L2(lb_m) (with a dot above the n)

• p. 264, Section 6.5a, Line 4: Change AgCO₃ to Ag₂CO₃

• p. 283, Prob. 6.20: On Lines 4 and 5, change 16 psia to 16 psig.

• 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_i+1 to y_i-1, and change x_i-1 to x_i+1.
  - In Part (b), add the sentence "Assume the stage temperature is 50^oC."
  - In Part (d), Row 4 of the spreadsheet, change y_e to y_N. On the line below the spreadsheet, change x_i to x₁.

• 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 G₂ to G₁

• p. 304, Prob. 6.85, Line 3: "to 1.00 kg of the solution to raise the normal boiling point by an additional 3^oC."

• 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. 345, Prob. 7.22, Line 3: Change 2974 J/kg to 2974 kJ/kg.

• p. 351, Prob. 7.48, Line 4: Delete "&DeltaH = 2919"

• p. 355, Prob. 7.54(b). In the figure, change 3.5 bar to 3.1 bar

• 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)_C2H5OHdT

• p. 460. In Eq. (9.5-3), change (n) to (r). In the line above the equation, change "n moles of solvent" to "r moles of solvent."

• 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 0.900, and change 14.0 to 13.5. On the 3^rd line down from Eq. (8), change the value of n₈ 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 m³/s to 0.050 m³/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. 631, Table B.1. The normal boiling point of mercury should be 356.7 (not -356.9). The standard heat of combustion of liquid methanol should be -726.6 (not +726.6)

• p. 632, Table B.1. In the entry for Phosphorus(red), the 0(c) in the next-to-last column belongs to Phosphorus(white) at the top of the next page.

• p. 636, Table B.2: In the formula for the heat capacity of hydrogen cyanide, change the value of c x 10⁸ from 1.092 to -1.092

• pp. 638-9, Table B.3. Change the vapor pressure of water at 18.6^oC from 16.771 to 16.071, the vapor pressure at 33.4^oC from 33.584 to 38.584, and the vapor pressure at 95.2^oC from 938.59 to 638.59

• p. 656, TY on p. 49, Item 5: 50x10³ 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).  110 kg/h (not 109)

• Prob. 4.50(c).  0.877 (not 0.875)

• Prob. 7.32(b).  12 kW (not 1.8)

• Prob. 8.32(a).  732^oC (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 O₂ (not 9.0)

• Prob. 9.62(a).  119% excess air (not 99%)

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