2 g molecule of P C l 5 are heated in a closed vessel of two litre capacity. When the equilibrium is attained, P C l 5 is 40% dissociated into P C l 3 and C l 2 . The equilibrium constant is

Question

2 g molecule of P C l 5 are heated in a closed vessel of two litre capacity. When the equilibrium is attained, P C l 5 is 40% dissociated into P C l 3 and C l 2 . The equilibrium constant is, 0.534, 0.267, 26.7, 2.67

MARKS App · Accepted Answer

40% P C l 5 is dissociated x = 2 × 40 100 = 0.8 K C = [ P C l 3 ] [ C l 2 ] [ P C l 5 ] = 0.4 × 0.4 0.6 = 0.267 .

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