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JEE Main 202529 JanuaryEvening Shift
Exam
JEE Main
Year
2025
Date
29 January
Shift
Evening Shift
Subject
Chemistry
Chapter
Chemical Equilibrium

JEE Main 2025 · 29 January · Evening Shift · Chemistry · Chemical Equilibrium

Consider the equilibrium CO(~g)+3 H_2(~g) leftharpoons CH_4(~g)+H_2...

Consider the equilibrium CO( g)+3H2( g)⇌CH4( g)+H2O( g)\mathrm{CO}(\mathrm{~g})+3 \mathrm{H}_2(\mathrm{~g}) \rightleftharpoons \mathrm{CH}_4(\mathrm{~g})+\mathrm{H}_2 \mathrm{O}(\mathrm{~g}) If the pressure applied over the system increases by two fold at constant temperature then (A) Concentration of reactants and products increases. (B) Equilibrium will shift in forward direction. (C) Equilibrium constant increases since concentration of products increases. (D) Equilibrium constant remains unchanged as concentration of reactants and products remain same. Choose the correct answer from the options given below :

Options

  1. A(A), (B) and (C) only
  2. B(A) and (B) only
  3. C(A), (B) and (D) only
  4. D(B) and (C) only

Correct answer

B. (A) and (B) only

Step-by-step solution

CO(g)+3H2⇌CH4( g)+H2O(g)Δng=−2\begin{aligned} & \mathrm{CO}(\mathrm{g})+3 \mathrm{H}_2 \rightleftharpoons \mathrm{CH}_4(\mathrm{~g})+\mathrm{H}_2 \mathrm{O}(\mathrm{g}) \\ & \Delta \mathrm{n}_{\mathrm{g}}=-2\end{aligned} If pressure of system increases then according to Le-Chatelier's principle reaction will move in forward direction. Concentration of reactant and products both increases but concentration of product increases more.
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