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For the chemical equation $2 CO (g) + O_{2} (g) \to 2 {CO}_{2} (g)$ the entropy change would be

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detailed solution

Correct option is A

$Δ v_{g}$ is negative, entropy change will also be negative.

Thus, the correct option is A.

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For the chemical equation 2CO(g)+O2(g)→2CO2(g) the entropy change would be