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Does the number of moles of reaction products increase, decrease or remain same when each of the following equilibria is subjected to a decrease in pressure by increasing the volume?

(i) PCl5(g) = PCl3(g) + Cl2(g)

(ii) CaO(s) + CO2(g) = CaCO3(s)

(A) (i) increase, (ii) increase

(B) (i) decrease, (ii) decrease

(C) (i) increase, (ii) decrease

(D) (i) decrease, (ii) increase

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The number of moles of reaction product (i) increase, (ii) decrease, when each of the following equilibrium is subjected to a decrease in pressure by increasing the volume.

The correct option is (C).

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