Problem: The following equilibria are known at 823 K: Zn (s) + H2O (g) ⇌ ZnO (s) + H2 (g) Kc = 0.015   Zn (s) + CO2 (g) ⇌ ZnO (s) + CO (g) Kc = 0.0020   Based on the above equilibria, calculate the Kc of the following reaction: CO (g) + H2O (g) ⇌ H2 (g) + CO2 (g) Kc = ? A. 7.5 B. 0.13 C. 3.0x10−5 D. 0.013

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Problem Details

The following equilibria are known at 823 K:

Zn (s) + H2O (g) ⇌ ZnO (s) + H2 (g) Kc = 0.015

Zn (s) + CO2 (g) ⇌ ZnO (s) + CO (g) Kc = 0.0020

Based on the above equilibria, calculate the Kc of the following reaction:

CO (g) + H2O (g) ⇌ H2 (g) + CO2 (g) Kc = ?

A. 7.5

B. 0.13

C. 3.0x10−5

D. 0.013

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