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Quiz 2-solutions

# Quiz 2-solutions - Version 004 Quiz 2 fakhreddine(51615...

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Version 004 – Quiz 2 – fakhreddine – (51615) 1 This print-out should have 4 questions. Multiple-choice questions may continue on the next column or page – Fnd all choices before answering. 001 2.0 points Using the law of mass action, write the equilibrium expression for the following reac- tion: 2 Cu 2+ (aq) + 4 I (aq) ←→ 2 CuI(s) + I 2 (aq) 1. K = [I 2 ] [Cu 2+ ] 2 [I ] 4 correct 2. K = [Cu 2+ ] 2 [I ] 4 [I 2 ][CuI] 2 3. K = [I 2 ][CuI] 2 [Cu 2+ ] 2 [I ] 4 4. K = [Cu 2+ ] 2 [I ] 4 [I 2 ] Explanation: The equilibrium expression, K , is the ratio of products to reactants raised to their respec- tive stoichiometric coe±cients. Solid species are not included in the expression. 002 2.0 points An animal cell assumes its normal volume when it is placed in a solution with a total solute molarity of 0.3 M. If the cell is placed in a solution with a total solute molarity of 0.1 M, 1. the escaping tendency of water in the cell increases. 2.

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Quiz 2-solutions - Version 004 Quiz 2 fakhreddine(51615...

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