Errata for version printed January '97

Links to errata for other printings: 8/98, 1/98, 8/97

Computer Program Errors

• VLA - this van Laar program has an error in each of the formulas that calculate A12 and A21. In each case the error can be corrected by replacing the first "/" symbol with a "*".
• GAMMAFIT.xls - There are no known errors in the programming, however the instructions say that the natural logarithm is used in the formula for vapor pressure. This is incorrect. The common logarithm is used.

• Page 14, Example 1.1, solution to part a), should read: ...find the saturation pressure at 110 C....
• Page 19, Example 1.6 should refer to Figure 1.5
• Page 47, Example 2.11, stream(2) flow rate should be listed as 110 kg/h, stream (3) should be bled to 0.1 MPa.
• Page 48, figure at top, stream (4) label should show m(dot) approx. equal 0 kg/h
• Page 53, corrections to practice problem solutions for Chapter 2: P2.10 7481, -7566; p2.11 -7566; p2.13a 13.75m/s b. 9.6m; p2.15 390cm3; p2.18a -288J/g
• Page 65, Eqn. 3.11 should read [dU + PdV] = dQ(rev)
• Page 81, Error in interpolation. The initial values should be H = 3204.4 kJ/kg, and S = 7.2382 kJ/kg-K.
• Page 84, Figure at top of page. Inlet should be 25 C rather than 70 C
• Page 88, Problem 3.1 clarification: the initial volume is 60 m³
• Page 88, Problem 3.8 clarification: the initial T is 300 K
• Page 88, Problem 3.4, Parts a and b should ask for S(dot)gen (problem statement is missing the underline).
• Page 98, Example 4.4 worked using chart from Perry's 6th edition rather than provided data.
• Page 100, Example at top of page, solution to parts a) and b): change x to q
• Page 114, Equation 5.37, the last partial derivative should be at fixed P, i.e. (partial T/partial V) fixed P
• Page 120, Equation 6.3 should read Z = Z(0) + w4(Z(0.25)-Z(0))
• Page 124, Example 6.1, should refer to the compressibility charts rather than the virial equation.
• Page 129, Example 6.3, temperature should be 105.6 K in problem statement
• Page 130, Example 6.4, replace "virial" with "Peng-Robinson"
• Page 147, Second and third line of section 7.5, replace "see Section 7.8", with "see Section 7.6"
• Page 149, line above Step III, the entropy change is incorrect, replace 6.608 with 6.613
• Page 154, Figure 7.3, the lower step should be labeled "(M-M(ig))", (delete subscript R)
• Page 159, corrections to practice problems using critical data and heat capacities from appendices: P7.1, 12570 J/mol, 17.998 J/mol-K, 11,690 J/mol, -640 cm3/mol; P7.2 are a)294K (b) 278K; P7.7, 26%
• Page 166, Example 8.2, -12 C is 261.2 K. There is a typo in the first line of the example incorrectly listing the T as 259K
• Page 167, third equation line from the top. The end of the line should read = A(1-1/0.7) = A(-3/7)
• Page 167, second line of example 8.3 should refer to Example 8.2
• Page 168, Equation 8.10 should have a minus in front of B, e.g. A - B/(T+C).
• Page 172, just above Eqn 8.25, the reference should be to Eqn 8.21
• Page 175, Figure 8.6, The right figure ordinate should be fugacity, and the caption should be changed.
• Page 188, line above Eqn 9.11, the truncated equation should be (dn/dn(i))(T,P) = 1, (The "1" is missing).
• Page 199, in Example 9.1 the solution to part b has an error. The interpolation has a mixed up sign. The (320-315) should be (315-320)
• Page 205, Chapter 10, The Peng-Robinson results were generated using an earlier version of the program, so the results will be slightly different using the current version of PRMIX.EXE
• Page 209, Eqn 10.13, the f(hat) on the left hand side of the equation should have a subscript i.
• Page 210, 211, Example 10.1, All phis should be phi(hat)s. Also there is a typo in the coefficient for A in the line below the table at the top of pg. 211.
• Page 213, Eqn 10.27, the f(hat) on the left hand side of the equation should have a subscript i.
• Page 226, Eqn 11.14, G(E) should be underlined
• Page 228, Eqns 11.19 and 11.20 are messed up. The final equation should be log P(sat) = A - B/(T+C) where C is CHOSEN to be 273 and T is in deg C. The sign of B is incorrect in the text. The correct parameter values are: A = 9.3433, B = +2297.4, C = 273.
• Page 252, Eqn 11.105, the bracketed quantity should be (1/A21 - 1/A12) in 11.105 and also where it appears two lines below.
• Page 261, Problem 11.3. When the parameters are fitted to the azeotrope information given, the system is then predicted to be a system with a heteroazeotrope. The azeotrope data for this problem are from the 56th edition of CRC, which doesn't list any information about LLE for this system. Currently, the literature has not been searched further. The problem can be solved using method of Chapter 12. The phase diagram is a variation of Figure 13.4 e and f.
• Page 268, there is an error in the subdivision of MEK into functional groups in Example 12.3 which affects all the numerical calculations and some of the numbers in problem 12.8. A handout will correct these pages when the class reaches that section.
• Page 276, problem 12.8. The procedure is fine, but some of the numbers are incorrect. See erratum for page 268.
• Page 296, the footnote refers to another footnote on page 154 that has been moved to section 8.12 on pg. 180. Essentially the moved footnote emphasizes the fact that the choice for a reference state was arbitrary. G will decrease with temperature if entropy is positive, and the entropy value itself depends on temperature. Figure 14.1 is plotted considering the reference temperature to be much less than Tm so that the entropy is positive in the range of interest.
• Page 299, last paragraph, switch the references to Fig 14.5 and 14.6.
• Page 308, Example 15.2, the Gibbs energies and enthalpies of formation are incorrect. The values for enthalpies of formation and Gibbs energy of formation for each compound (in kJ/mol) listed respectfully are: 1-butene, -0.54, 70.24; 1,3-butadiene, 109.24, 149.73; Hydrogen, 0,0. The Gibbs energy of reaction on the last line should be 0 + 149.73 - 70.24 = 79.49 kJ/mol
• Page 315, the equations in the first line after Method 1 and the first line after Method 2 -- the superscripts on the terms are mixed up, the first term should involve "in" and the second should involve "out".
• Page 320, Example 15.9, 2nd line of solution, sign error, ln K = +4.2396.
• Page 328, Equation just above section 15.11, P is omitted in the numerator of the expression involving squiggles, and the last number should not have dimensions.
• Page 343, Equations 16.42 and 16.43 MSU version only (these errors were corrected in the Akron version [Eqn 16.47 and 16.48 for Akron version] before printing) Delete the "1" appearing on the right hand side of both equations.
• Page 369, Paragraph above the heading "Solution Method 1". The paragraph starting "For an EOS..."should be stricken because it is not always true.

• General - There are minor errors such as missing or double periods, some typos such as "and" rather than "an" etc. We are correcting these, however many are not listed since they do not affect the technical accuracy and the correction is obvious. Below is a partial list:
• Page iii, 10 lines from bottom, "languaes" should be "languages"
• Page 18, 2nd line, delete double period
• Page 26, second line of example 2.2 reads "the gas is isothermally expanded isothermally...", strike one "isothermally"
• Page 41, line 5, end of line, change "temperate" to "temperature"
• Page 54, Problem 2.3, "Helium" should be "helium", delete double period at end
• Page 58 line 8 reads "to make the connection between entropy and temperature, we analyze extend the..." strike "analyze"
• Page 64, three lines above Eqn 3.8, end of line should read "that he realized that such a state"
• Page 80, Figure 3.5b. Caption, fourth line should read "leans more than"
• Page 92, 93, 97 spelling of condenser in figures
• Chapters 6 and 7 -- numerous spelling errors not listed here (omitted spell-checking, sorry).
• Page 125, Example 6.2, "dioxite" should be "dioxide"
• Page 128, last line, "n'ow" should be "now"
• Page 130, Example 6.4, "dioxite" should be "dioxide"
• Page 272, alignment of Eqn 12.6
• Page 376, sentence above D-3, looks like it may be missing a space before "in Eqn D-2"

Copyright © 1997, Carl T. Lira, J. Richard Elliott. All rights reserved.