The equilibrium of which of the following reaction will not be disturbed by the addition of an inert gas at constant volume ?

H_{2} (g) + I_{2} (g) ⇌ 2 H I (g)

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N_{2} O_{4} (g) ⇌ 2 N O_{2} (g)

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C O (g) + 2 H_{2} (g) ⇌ C H_{3} O H (g)

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C (s) + H_{2} O (g) ⇌ C O (g) + H_{2} (g)

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Solution

The correct options are
A $H_{2} (g) + I_{2} (g) ⇌ 2 H I (g)$
B $N_{2} O_{4} (g) ⇌ 2 N O_{2} (g)$
C $C (s) + H_{2} O (g) ⇌ C O (g) + H_{2} (g)$
D $C O (g) + 2 H_{2} (g) ⇌ C H_{3} O H (g)$
When an inert gas is added to the system in equilibrium at constant volume, then the total pressure will increase. But the concentrations of the products and reactants i.e. ratio of their moles to the volume of the container will not change. Also, the partial pressure of reactants and products will remain same.
Hence, when an inert gas is added to the system in equilibrium at constant volume there will be no effect on the equilibrium..

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0.44

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C O_{2} (g) + H_{2} (g) ⇌ C O (g) + H_{2} O (g)

will be-

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