Chemistry-Chemical Equilibrium
NEET Chemistry Chemical Equilibrium MCQ Question
Type: MCQ-diagram based-Easy-Class 11
Consider a diagram depicting the equilibrium reaction: 2NO (g) + Br2 (g) ⇌ 2NOBr (g). If the initial moles of NO and Br2 are 0.087 mol and 0.050 mol respectively in a 1 L container, which of the following expressions correctly represents the equilibrium constant Kc for this reaction?
A
Kc = [NOBr]^2 / ([NO]^2 [Br2])
B
Kc = [NOBr] / ([NO] [Br2]^2)
C
Kc = 2[NOBr] / [NO][Br2]
D
Kc = [NOBr]^2 / [NO][Br2]^2
Correct Answer
Option A
Detailed Explanation
The equilibrium constant expression for the reaction 2NO(g) + Br2(g) ⇌ 2NOBr(g) is Kc = [NOBr]^2 / ([NO]^2 [Br2]), as the concentration of products is divided by the concentration of reactants, each raised to the power of their stoichiometric coefficients.
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