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Q.

CaCO3(s)CaO(s)+CO2(g),ΔH=110kJ 

The pressure of  CO2 

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a

Decreases if T is raised

b

Increases if inert gas is passed keeping T constant

c

Increases if Tis raised

d

Increases on adding catalyst 

answer is C.

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Detailed Solution

Applying  Lechatelier's  principle.

The equilibrium reaction is CaCO3​(s)⇔CaO(s)+CO2​(g);ΔH=110kJ.

Positive value of the enthalpy change indicates that the reaction is endothermic. 

  The forward reaction is favored by increasing temperature.

Thus, when the temperature is increased, more carbon dioxide is formed

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