In a reaction at equilibrium, what happens to the enthalpy if the temperature is

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Question: In a reaction at equilibrium, what happens to the enthalpy if the temperature is increased?

Options:

Correct Answer: Enthalpy increases for endothermic reactions

Solution:

For endothermic reactions, increasing temperature shifts the equilibrium and increases enthalpy.

In a reaction at equilibrium, what happens to the enthalpy if the temperature is increased?

In a reaction at equilibrium, what happens to the enthalpy if the temperature is increased?

Step 1: Understand what equilibrium means. It is a state where the forward and reverse reactions happen at the same rate.
Step 2: Know that reactions can be endothermic or exothermic. Endothermic reactions absorb heat, while exothermic reactions release heat.
Step 3: Identify that increasing temperature adds heat to the system.
Step 4: For endothermic reactions, adding heat will shift the equilibrium to the right, favoring the products.
Step 5: As the equilibrium shifts to the right in an endothermic reaction, the overall enthalpy (heat content) of the system increases.

Le Chatelier's Principle – When a system at equilibrium is subjected to a change in temperature, the equilibrium will shift to counteract that change.
Endothermic vs Exothermic Reactions – Endothermic reactions absorb heat, while exothermic reactions release heat, affecting how equilibrium shifts with temperature changes.
Enthalpy Changes – Enthalpy is a measure of heat content in a system, and its change is influenced by the direction of the equilibrium shift.