The dissociation equilibrium of a gas AB2 can be represented as2AB2(g) ⇌ 2AB(g) + B2(g)The degree of dissociation is x and is small compared to 1. The expression relating the degree of dissociation (x) with equilibrium constant KP and total pressure P is
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a
2KP/P1/3
b
2KP/P1/2
c
KP/P
d
2KP/P
answer is A.
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Detailed Solution
2AB2(g) ⇌ 2AB(g) + B2(g) 1 0 01 - x x x/2∴ KP = x2.x21-x2 . P1+x2 = x3. P21-x ≈ 1 and 1 + x2 ≈ 1, since x < < 1Or P = 2KPP3