CHEMISTRY: CENTRAL SCIENCE W/ACCESS >I
3rd Edition
ISBN: 9781269917995
Author: Brown
Publisher: PEARSON C
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Textbook Question
Chapter 19, Problem 107IE
Most liquids follow Trouton’s rule (see Exercise 19.95), which states that the molar entropy of vaporization is approximately 88 ± 5 J/mol-K. The normal boiling points and enthalpies of vaporization of several organic liquids are as follows:
| Substance | Normal Boiling Point (°C) | ΔHrap (kj/mol) |
| Acetone, (CH3)2CO | 56.1 | 29.1 |
| Dimethyl ether, (CH3)2O | -24.8 | 21.5 |
| Ethanol, C2H5OH | 78.4 | 38.6 |
| Octane, CSH|S | 125.6 | 34.4 |
| Pyridine, QHSN | 115.3 | 35.1 |
(a) Calculate ΔSo for each of the liquids. Do all the liquids obey Trouton’s rule? (b) With reference to intermolecular forces (Section 11,2), can you explain any exceptions to the rule? (c) Would you expect water to obey Trouton’s rule? By using data in Appendix B, check the accuracy of your conclusion, (d) Chlorobenzene (C46H5Cl) boils at 131.8 °C. Use Trouton’s rule to estimate ΔHvap for this substance.
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Chapter 19 Solutions
CHEMISTRY: CENTRAL SCIENCE W/ACCESS >I
Ch. 19.1 - The process of iron being oxidized to make...Ch. 19.1 - Prob. 19.1.2PECh. 19.2 - Do all exothermic phase changes have a negative...Ch. 19.2 - Prob. 19.2.2PECh. 19.3 - Prob. 19.3.1PECh. 19.3 - Prob. 19.3.2PECh. 19.3 - Suppose you have two 1-L flasks, one containing N2...Ch. 19.3 - Prob. 19.4.2PECh. 19.4 -
10.8
Place the following gases in order of...Ch. 19.4 - Prob. 19.5.2PE
Ch. 19.5 - Prob. 19.6.1PECh. 19.5 - Prob. 19.6.2PECh. 19.5 - Prob. 19.7.1PECh. 19.5 - Prob. 19.7.2PECh. 19.5 - Prob. 19.8.1PECh. 19.5 - Prob. 19.8.2PECh. 19.6 - Prob. 19.9.1PECh. 19.6 - Prob. 19.9.2PECh. 19.7 - Prob. 19.10.1PECh. 19.7 - Prob. 19.10.2PECh. 19.7 - Prob. 19.11.1PECh. 19.7 - Prob. 19.11.2PECh. 19.7 - Prob. 19.12.1PECh. 19.7 - Prob. 19.12.2PECh. 19 - Prob. 1DECh. 19 - Prob. 1ECh. 19 - Prob. 2ECh. 19 - Prob. 3ECh. 19 - Prob. 4ECh. 19 - Prob. 5ECh. 19 - Prob. 6ECh. 19 - 11.47 Indicate whether each statement is true or...Ch. 19 - Prob. 8ECh. 19 - Prob. 9ECh. 19 - Prob. 10ECh. 19 - Prob. 11ECh. 19 - Prob. 12ECh. 19 - Prob. 13ECh. 19 - Prob. 14ECh. 19 - A glass vessel fitted with a stopcock valve has a...Ch. 19 - Prob. 16ECh. 19 - Prob. 17ECh. 19 - Prob. 18ECh. 19 - Prob. 19ECh. 19 - Prob. 20ECh. 19 - Prob. 21ECh. 19 - Consider what happens when a sample of the...Ch. 19 - Prob. 23ECh. 19 - Prob. 24ECh. 19 - The normal boiling point of Br2(l) is 58.8 °C, and...Ch. 19 - Prob. 26ECh. 19 - Prob. 27ECh. 19 - Prob. 28ECh. 19 - Prob. 29ECh. 19 - Prob. 30ECh. 19 - Prob. 31ECh. 19 - Prob. 32ECh. 19 - Prob. 33ECh. 19 - Prob. 34ECh. 19 - 19.35 (a) What do you expect for the sign of ∆S in...Ch. 19 - Prob. 36ECh. 19 - Prob. 37ECh. 19 - Prob. 38ECh. 19 - Prob. 39ECh. 19 - Prob. 40ECh. 19 - For each of the fallowing pairs, choose the...Ch. 19 - Prob. 42ECh. 19 - Prob. 43ECh. 19 - Prob. 44ECh. 19 - Prob. 45ECh. 19 - Prob. 46ECh. 19 - Prob. 47ECh. 19 - Cyclopropane and propylene are isomers that both...Ch. 19 - Prob. 49ECh. 19 - Prob. 50ECh. 19 - Prob. 51ECh. 19 - Prob. 52ECh. 19 - Prob. 53ECh. 19 - Prob. 54ECh. 19 - Prob. 55ECh. 19 - Prob. 56ECh. 19 - Prob. 57ECh. 19 - Prob. 58ECh. 19 - Using data in Appendix C, calculate HO, SO,...Ch. 19 - Prob. 60ECh. 19 - Prob. 61ECh. 19 - Prob. 62ECh. 19 - Prob. 63ECh. 19 - Prob. 64ECh. 19 - Prob. 65ECh. 19 - From the values given for H° and S°, calculate G°...Ch. 19 - Prob. 67ECh. 19 - Prob. 68ECh. 19 - Prob. 69ECh. 19 - Prob. 70ECh. 19 - Prob. 71ECh. 19 - Prob. 72ECh. 19 - (a) Use data in Appendix C to estimate the boiling...Ch. 19 - Prob. 74ECh. 19 - Prob. 75ECh. 19 - Prob. 76ECh. 19 - Prob. 77ECh. 19 - Prob. 78ECh. 19 - Consider the reaction 2 NO2(g) (N2O4(g). (a)...Ch. 19 - Prob. 80ECh. 19 - Prob. 81ECh. 19 - Prob. 82ECh. 19 - Prob. 83ECh. 19 - Prob. 84ECh. 19 - Prob. 85ECh. 19 - The Kb, for methylamine (CH3NH2) at 25oC is given...Ch. 19 - Prob. 87AECh. 19 - Prob. 88AECh. 19 - Prob. 89AECh. 19 - Prob. 90AECh. 19 - Prob. 91AECh. 19 - Prob. 92AECh. 19 - Prob. 93AECh. 19 - Prob. 94AECh. 19 - Prob. 95AECh. 19 - Prob. 96AECh. 19 - Consider the following three reactions: (i) Ti (s)...Ch. 19 - Prob. 98AECh. 19 - (a) For each of the following reactions, predict...Ch. 19 - Prob. 100AECh. 19 - Prob. 101AECh. 19 - Prob. 102AECh. 19 - Prob. 103AECh. 19 - Prob. 104AECh. 19 - Prob. 105AECh. 19 - Prob. 106AECh. 19 - Most liquids follow Trouton’s rule (see Exercise...Ch. 19 - 19.108 In chemical kinetics the entropy of...Ch. 19 - Prob. 109IECh. 19 - Prob. 110IECh. 19 - Prob. 111IECh. 19 - Prob. 112IECh. 19 - The following data compare the standard enthalpies...Ch. 19 - Prob. 114IECh. 19 - Prob. 115IECh. 19 - Prob. 116IE
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