review exam_1

review exam_1 - REVIEW EXAM I 1. Which one of the following...

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REVIEW EXAM I 1. Which one of the following statements is/are false? a. When a solution is rapidly cooled, its volume decreases but no evaporation occurs. This phenomenon will change the mole fraction after cooling. b. CH 3 OH is more soluble in CC 4 than in water. c. HBr can either be an electrolyte or non-electrolyte depending on its physical state. d. The boiling point of an aqueous solution of A C 3 is higher than the boiling point of an aqueous solution of sucrose, C 12 H 22 O 11 of the same concentration. e. When the solubility of a solute in solution is exceeded, the solution is said to be saturated. 2. For the first order reaction A products It takes 20 minutes for [A] to drop from 1.0 to 0.60. The time required for [A] to drop from 0.60 to 0.36 is a. < 20 minutes b. > 20 minutes c. = 20 minutes d. can’t tell 3. At 25 ° C CO 2 (g) CO 2 (aq) H < 0 KNO 3 (s) K + (aq) + NO 3 - (aq) H > 0 If the temperature is raised to 50 ° C, what happens to the solubilities? solubility of CO
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This note was uploaded on 04/08/2008 for the course CHEM 128 taught by Professor All during the Spring '08 term at UConn.

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review exam_1 - REVIEW EXAM I 1. Which one of the following...

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