Q.

The value of equilibrium constant for the reaction 2A(ag)+B(ag)⇌2C(aq)  is 4 mole -1 lit . At the given time of equilibrium if the reaction mixture has the concentrations  [A]=0.2 mole.lit -1;[B]=0.1 mole.lit -1 and   [C]=0.3 mole.lit -1 then the relation between reaction quotient, equilibrium constant and the direction of reaction is

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a

KC>QC; Forward

b

QC>KC; Backward

c

KC>QC; Backward

d

QC>KC; Forward

answer is B.

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Detailed Solution

Reaction Quotient Qc=(0.3)2(0.2)2(0.1)=22.5 lit.mole -1Since QC>Kc reaction will proceed in backward direction to attain equilibrium.
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