Q.

For the equilibrium \large {A_{(g)}}\, \rightleftharpoons \,{B_{(g)}}\, + \,{C_{(g)}}; Kp = 0.82 atm at 270C. At the same temperature its Kc in mol lit-1 is (R = 0.082 lit atm mol-1 K-1)

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a

1.0

b

0.33

c

3.3

d

0.033

answer is A.

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Detailed Solution

\large {A_{(g)}}\, \rightleftharpoons \,{B_{(g)}}\, + \,{C_{(g)}};

Δng = nP (g) -nR (g)

Δng = 2 - 1

Δng = 1

KP = KC (RT)Δn
0.82 = KC (0.0821 ×300)1

\large K_C = \frac{1}{30}=0.033M
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