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AIIMS2018Chemistry-Chemical Equilibrium

AIIMS 2018 Chemistry Relation between Kₚ and Kc MCQ Question

Type: MCQ-conceptual-Easy-Class 11

Question : Kc\text{K}_\text{c} for the reaction N2(g)+O2(g)⇌2NO(g)\text{N}_2\text{(g)} + \text{O}_2\text{(g)} \rightleftharpoons 2\text{NO(g)} at 300 K300\text{ K} is 4.0×10−64.0 \times 10^{-6}. Kp\text{K}_\text{p} for the above reaction will be (R=2 cal mol−1K−1)(\text{R} = 2\text{ cal mol}^{-1}\text{K}^{-1})

A

2.4×10−32.4 \times 10^{-3}

B

4×10−64 \times 10^{-6}

C

4×10−6(RT)24 \times 10^{-6}(\text{RT})^2

D

16×10−1216 \times 10^{-12}

Correct Answer

Option B

Detailed Explanation

In the given scenario, since Δn = 0, it indicates that the number of moles of gaseous products equals the number of moles of gaseous reactants, leading to Kₚ being equal to Kc, as expressed by the equation Kₚ = Kc (RT)Δn. This relationship is crucial in understanding how equilibrium constants are interrelated under different conditions. The other options are not relevant as they do not provide any alternative explanations or correct interpretations of the relationship between Kₚ and Kc. Understanding this concept is essential for predicting the behavior of chemical equilibria in gaseous reactions.

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