# Chap - Chap 13 1 Write equilibrium-constant expressions Kc...

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Chap. 13 1. Write equilibrium-constant expressions, K c , for each of the following reactions. (a) PCl 3 (g) + Cl 2 (g) ↔ PCl 5 (g) (b) 3O 2 (g) ↔ 2O 3 (g) (c) 2NOCl(g) ↔ 2NO(g) + Cl 2 (g) (d) 4NH 3 (g) + 3O 2 (g) ↔ 2N 2 (g) + 6H 2 O(g) 2. Write the expression for the equilibrium constant, K c , for each of following equations. (a) NH 4 Cl(s) ↔ NH 3 (g) + HCl(g) (b) C(s) + 2N 2 O(g) ↔ CO 2 (g) + 2N 2 (g) (c) 2NaHCO 3 (s) ↔ Na 2 CO 3 (s) + H 2 O(g) + CO 2 (g) (d) Fe 3+ (aq) +3OH - (aq) ↔ Fe(OH) 3 (s) 3. The equilibrium constant K c for the equation: CS 2 (g) + 4H 2 (g) ↔ CH 4 (g) + 2H 2 S(g) at 900 o C is 27.8. What is the value of K c for the following equation: ½ CS 2 (g) + 2H 2 (g) ↔ ½ CH 4 (g) + H 2 S(g) 4. A mixture of carbon monoxide, hydrogen, and methanol, CH 3 OH, is at equilibrium according to the equation: CO(g) + 2 H 2 (g) ↔ CH 3 OH(g) At 250 o C, the mixture is 0.096 M CO and 0.191 M H 2 , and 0.015 M CH 3 OH, What is K c for this reaction at 250 o C?

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5. Would either of the following reactions go almost completely to product at
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## This note was uploaded on 04/21/2008 for the course CHEM 1151 taught by Professor Splan during the Spring '08 term at Minnesota.

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Chap - Chap 13 1 Write equilibrium-constant expressions Kc...

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