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JEE · NEET Previous Year Question

$K_{P} / K_{C} for the reaction at T (K) is CO (g) + \frac{1}{2} O_{2} (g) ⇌ CO_{2} (g)$

Topic: JEE PYQ

Answer: D. Full step-by-step solution below.

A $RT$
B $2 RT$
C $RT$
D $1/ RT$

Correct answer: D

Solution

(d) K_{p} = K_{c} (RT)^{Δ n} [Δ n = Change in the no. gaseous molecules from reactant to product.] In this equation, Δ n = (1 - 1 - \frac{1}{2}) = - \frac{1}{2} ∴ \frac{K _{p}}{K _{c}} = (RT)^{- 1/2} = \frac{1}{RT}

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