CHEM 302 HW4 - jrr944 Homework 4 Lyon (53565) 1 This...

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Unformatted text preview: jrr944 Homework 4 Lyon (53565) 1 This print-out should have 18 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. This HW asignment is due Wednesday, Feb. 13, by 4:00PM. 001 10.0 points When the chemical reaction A + B C + D is at equilibrium, 1. the reverse reaction has stopped. 2. neither the forward nor the reverse reac- tions have stopped. 3. all four concentrations are equal. 4. the forward reaction has stopped. 5. the sum of the concentrations of A and B equals the sum of the concentrations of C and D. 6. both the forward and reverse reactions have stopped. 002 10.0 points In which of the following cases will the LEAST time be required to arrive at equilibrium? K below refers to the equilibrium constant. 1. K is a very large number. 2. Cannot tell without knowing the value of K . 3. Cannot tell since the time to arrive at equilibrium does not depend on K . 4. K is a very small number. 5. K is about 1. 003 10.0 points Consider the reaction 2 SO 2 (g) + O 2 (g) 2 SO 3 (g) . At equilibrium at a certain temperature, the concentrations of SO 3 (g), SO 2 (g), and O 2 (g) are 0.12 M, 0.86 M, and 0.33 M, respectively. Calculate the value of K c for this reaction. 1. 0.014 2. 1.31 3. 0.42 4. 0.059 5. 0.87 004 10.0 points Write the equilibrium expression for the reac- tion N 2 (g) + 2 H 2 (g) N 2 H 4 (g) 1. K = P N 2 H 4 P N 2 P 2 H 2 2. K = P N 2 P 2 H 2 P 2 N 2 H 4 3. K = P N 2 H 4 P 2 N 2 P H 2 4. K = P N 2 P N 2 H 4 P 2 H 2 5. K = P N 2 H 4 P N 2 2 P H 2 005 10.0 points What would be the expression for...
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CHEM 302 HW4 - jrr944 Homework 4 Lyon (53565) 1 This...

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