Chegg Guided Solutions for General Chemistry 6th Edition Chapter 15 Problem 58

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The equilibrium constant KP for the reaction

2H2O(g) ⇌ 2H2(g) + O2(g)

is found to be 2 × 10–42 at 25°C. (a) What is Kc for the reaction at the same temperature? (b) The very small value of KP (and Kc) indicates that the reaction overwhelmingly favors the formation of water molecules. Explain why, despite this fact, a mixture of hydrogen and oxygen gases can be kept at room temperature without any change.

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