Suggest way(s) to increase the concentration of carbon dioxide gas according to Le Chatelier's principle for the reversible reaction of CaCO₃ (s) ⇌ CaO (s) + CO₂ (g) which is an endothermic reaction.

Question

i. remove CaO

ii. increase the temperature of the system

iii. remove CO₂

iv. add CaCO₃

You may choose more than one answer

Answer 1

CaCO₃(s) + heat <==> CaO(s) + CO₂(g) ... heat is a reactant since it is endothermic

All of the possible choices would tend to push the reaction toward the right (products), thus increasing the production of CO₂ gas