1B-S10-Quiz-2-v1

1B-S10-Quiz-2-v1 - Quiz 2 Chem 1B, Spring 10 Fossum Name:...

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Quiz 2 Name: Chem 1B, Spring 10 Fossum Always show your work and explain your reasoning, include units, and check significant figures. x = b ± 2 4 ac 2 a ax 2 + bx + c = 0 1. (9 points) For the following equilibrium: 2 NO 2 (g) N 2 O 4 (g) K p = 6.75 at 25°C If you start with a mixture that is 0.20 atm NO 2 and 0.80 atm N 2 O 4 , a. Which way will the reaction go to reach equilibrium? Explain/support your answer. b. Calculate the equilibrium pressures of NO 2 and N 2 O 4 .
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2. (5 points) a. Given the reactions and corresponding equilibrium constants: Mg(OH) 2 (s) Mg 2+ (aq) + 2 OH - (aq) K = 1.8 × 10 -11 2 H 2 O (l) H 3 O + (aq) + OH - (aq) K = 1.0 × 10 -14 Calculate the equilibrium constant for the reaction:
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1B-S10-Quiz-2-v1 - Quiz 2 Chem 1B, Spring 10 Fossum Name:...

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