Question

What is the effect of increase in pressure on the following equilibrium;
CaO (s + CO2(g) = CaCO3(s)
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Answer 1

According to Le Chatelier's principle a reaction tends to oppose any change in it's state of equilibrium. If we increase the pressure then volume of CO2 will be decreased so the volume of CaCO3 will be decreased as well.

Answer 2

According to Le Chatelier's Principle :

For Pressure :

Increase in concentration of reactant will shift the reaction in forward direction and , increase in concentration of Product will sift the reaction in backward direction .

Here , in our question :-

${\sf CaO_{(s)}+CO_{2(g)}→CaCO_{3(s)}}$

We can see that ,

Concentration of gas on reactant is more than Product.

⛬ On increase in pressure reaction will goes in Forward Direction.