A(g) ⇌ B(g) + (C/2)(g). The correct relationship between K_p, α and equilibrium pressure P is

JEE Main 2024 Chemistry question

A(g) ⇌ B(g) + (C/2)(g). The correct relationship between , α and equilibrium pressure P is

(A)
(B)
(C)Correct
(D)

Answer: (C)

Solution

For A(g) ⇌ B(g) + ½C(g) with initial 1 mol, the equilibrium amounts are A: 1 − α, B: α and C: α/2, so the total is 1 + α/2 = (2 + α)/2. The mole fractions are = 2(1 − α)/(2 + α), =

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Question ID VK-017238