Q.

Attainment of the equilibrium A(g)⇌2C(g)+B(g) gave the following graph. Find the correct option.(% dissociation = fraction dissociated x 100)

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At t=5sec equilibrium has been reached and Kc=40( mol/ litre )2

At t = 5 sec equilibrium has been reached and% dissociation of A is 2O%

At t = 5 sec equilibrium has been reached and o/o dissociation of A is 30%

None of these

answer is B.

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Detailed Solution

A(s)⇌2C(s)+B(g) at t=0, [A]=10M from graph, [A]eq.=10(1-α)=8 , [C]=10(2α)=4, [B]=10 α=2 kc=[C]2[B]1[A]1=4×4×28 =4( mol/L)2Hence option(2) is correct.

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