JEE Main 2014 Chemistry question

What happens when an inert gas is added to an equilibrium keeping volume unchanged?

(1)More product will form
(2)Less product will form
(3)More reactant will form
(4)Equilibrium will remain unchangedCorrect

Answer: (4)

Solution

At constant volume, adding an inert gas raises the total pressure but leaves every partial pressure (and every concentration) exactly as it was. Since the reaction

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Question ID VK-104564