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Chemistry Chemical Equilibrium Equilibrium State Single Correct MCQ

Published on: August 14, 2026

2CaSO4(s) 2CaO(s) + 2SO2(g) + O2(g), DH > 0

Above equilibrium is established by taking some amount of CaSO4(s) in a closed container at 1600 K. Then which of the following may be correct option.

Moles of CaO(s) will increase with the increase in temperature

If the volume of the container is doubled at equilibrium then partial pressure of SO2(g) will change at new equilibrium.

If the volume of the container is halved partial pressure of O2(g) at new equilibrium will remain same

If two moles of the He gas is added at constant pressure then the moles of CaO(s) will increase.

Text Solution

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The correct answer is:

CHECK THE SOLUTION.

(a, c, d)

As reaction is endothermic therefore it will go in the forward direction hence moles of CaO will increase.

With the increase or decrease of volume partial pressure

of the gases will remain same.

Due to the addition of inert gas at constant pressure reaction will proceed in the direction in which more number of gaseous moles are formed.

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