hw91 - CHM 2047 This assignment is due Friday, Nov. 4, in...

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CHM 2047 Homework 9 This assignment is due Friday, Nov. 4, in class. 1. Kotz, Ch. 14, Problem 80. 2. Kotz, Ch. 14, Problem 88. 3. Kotz, Ch. 14, Problem 92. 4. Kotz, Ch. 15, Problem 80. 5. Kotz, Ch. 15, Problem 100. 6. Ice cream is made by freezing a liquid mixture that, as a ±rst approximation, can be considered a solution of sucrose (C 12 H 22 O 11 ) in water. Estimate the temperature at which the ±rst ice crystals begin to appear in a mix that consists of 34% (by mass) sucrose in water. As ice crystallizes out of solution, the remaining solution become more concentrated. What happens to its freezing point? 7. At 20 C, the vapor pressure of toluene is 0.0289 atm and the vapor pressure of benzene is 0.0987 atm. Equal chemical amounts (equal numbers of moles) of toluene and benzene are mixed and form an ideal solution. Compute the mole fraction of benzene in the vapor in equilibrium with the solution. 8. The activation energy for the isomerization reaction of Ch
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hw91 - CHM 2047 This assignment is due Friday, Nov. 4, in...

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