Question

According to Le-Chatelier’s principle, adding heat to a solid to liquid in equilibrium will cause the

• A. Amount of liquid to increase
• B. Temperature to increase
• C. Amount of solid to increase
• D. Temperature to decrease

Answer 1

The correct option is A Amount of liquid to increase

Effect of adding heat on endothermic reaction

$\text{Solid(ice)}+\text{Heat}\rightleftharpoons \text{Liquid(water)}$

This reaction is endothermic and endothermic reactions are suitable at high temperatures and it requires heat to convert solid into liquid.

Hence, if an equilibrium is established between a solid and liquid at the melting point of the solid, then adding heat to the equilibrium will produce more liquid without causing any change in the temperature.

Hence, option (C) is the correct answer.