Chapter 11 and 13 Additional Problems

# Chapter 11 and 13 Additional Problems - Chapter 11 and 13...

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Chapter 11 and 13 Additional Problems 1. What intermolecular forces are in play in the following? A. C 2 H 5 OH ____________________________________ B. KBr in H 2 O ____________________________________ C. HI ____________________________________ D. Xe atom ____________________________________ 2. What is the enthalpy change of ethanol(C 2 H 5 OH) from -150 o C to 77 o C. Ethanol melts at -114 o C and boils at 78 o C. The enthalpy of fusion is 5.02 kJ/mol and the enthalpy of vaporization is 38.56 kJ/mol. The specific heat of solid ethanol is 0.97 J/g K and liquid ethanol is 2.31 J/g K. The sample is 75 grams. _______________________ 3. What is the concentration of a gas that has a Henry’s Law constant of 4.5 x 10 -2 mol/L atm, and a pressure of 888 torrs?

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_______________________ 4. A solution that consists of KBr and water has a mass of 78 g of KBr and 155 g of water. (a) What is the mass percent of KBr? (b) What is the mass percent of water? (c) What is the mole fraction of water? (d) What is the ppm of a solution of 0.78 g of KBr
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## This note was uploaded on 01/30/2011 for the course CHEM 1265 taught by Professor Deeter,g during the Spring '09 term at Tulsa Community College.

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Chapter 11 and 13 Additional Problems - Chapter 11 and 13...

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