Problem: Consider the following reactions at 25 °C:Reaction                                                      Kc2 NO (g) ⇌ N2 (g) + O2 (g)                          1 × 10302 H2O (g) ⇌ 2 H2 (g) + O2 (g)                     5 × 10−822 CO (g) + O2 (g) ⇌ 2 CO2 (g)                    3 × 1091Which compound is most likely to dissociate and give O2 (g) at 25 °C?1. CO22. NO3. CO4. H2O

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Problem Details

Consider the following reactions at 25 °C:
Reaction                                                      Kc
2 NO (g) ⇌ N(g) + O(g)                          1 × 1030
2 H2O (g) ⇌ 2 H(g) + O(g)                     5 × 10−82
2 CO (g) + O(g) ⇌ 2 CO(g)                    3 × 1091


Which compound is most likely to dissociate and give O(g) at 25 °C?

1. CO2

2. NO

3. CO

4. H2O

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