PCl5, PCl3 and Cl2 are at equilibrium at 500K in a closed container and their concentrations are 0.8 × 10–3 mol L–1, 1.2 × 10–3 mol L–1 and 1.2 × 10–3 mol L–1 respectively. The value of Kc for the reaction PCl5 (g) ⇌PCl3 (g) + Cl2 (g) will be
(i) 1.8 × 103 mol L–1
(ii) 1.8 × 10–3
(iii) 1.8 × 10–3 L mol–1
(iv) 0.55 × 104
PCl5, PCl3 and Cl2 are at equilibrium at 500K in a closed container and their concentrations are 0.8 × 10–3 mol L–1, 1.2 × 10–3 mol L–1 and 1.2 × 10–3 mol L–1 respectively. The value of Kc for the reaction PCl5 (g) ⇌PCl3 (g) + Cl2 (g) will be
(i) 1.8 × 103 mol L–1
(ii) 1.8 × 10–3
(iii) 1.8 × 10–3 L mol–1
(iv) 0.55 × 104
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1 Answer
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This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: The given reaction is :-
PCl5(g)?PCl3(g)+Cl2(g)
KC=
=1.2×10−3 ×1.2×10−3 0.8×10−3
=1.8×10−3molL−1
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