Quiz2_mac_key

Quiz2_mac_key - Chem 125 Spring 2008 Quiz #2 Macaroni Dr....

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Chem 125 Quiz #2 Macaroni Dr. Retsek Spring 2008 NAME: __ KEY_ _____________________________ 1. (3 points) A solution that raises the boiling point of water, will have what effect (if any) on the following properties compared to pure water?(circle one for each letter): If the boiling point increase, then the solution must have some soulte particles present. Remember it is boiling-point elevation, freezing-point depression, vapor pressure lowering, and osmotic pressure. a. Higher freezing point Lower freezing point T is proportional to concentration of solute No change on freezing point b. Higher osmotic pressure Π is proportional to M Lower osmotic pressure No effect on osmotic pressure c. Higher vapor pressure of water Lower vapor pressure of water P is related to χ P 0 . As χ decreases, P decreases No effect on vapor pressure of water 2. (8 points) For the following aqueous solutions, rank them from lowest to the highest freezing point. ( Hint: You should not need to calculate the actual freezing point to
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This note was uploaded on 06/07/2008 for the course CHEM 125 taught by Professor Retsek during the Spring '08 term at Cal Poly.

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Quiz2_mac_key - Chem 125 Spring 2008 Quiz #2 Macaroni Dr....

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