Consider the reaction: A + 2B_{(g)} ⇌ 2C + D_{(g)} (ΔH = +ve)

Correct Answer is : Rate of backward reaction will increase

The equilibrium constant will shift

Rates of forward and backward reactions are not affected

Rate of forward reaction will increase

Correct Answer is : Rate of backward reaction will increase

Test Index

JAMB Chemistry 2019 Paper

Question : 57

Total: 80

_{(g)} ⇌

_{(g)}

\Delta

H = +ve)

Solution:

Concept:

Le Chatelier’s principle predicts how an endothermic reaction responds to temperature changes.

Explanation:

The reaction has

\Delta H = +\text{ve}

, so it is endothermic.

This means heat is absorbed in the forward direction.

A decrease in temperature removes heat from the system.

The equilibrium shifts in the direction that releases heat, which is the backward reaction.

Therefore, the rate of the backward reaction increases while the forward reaction becomes less favoured.

Answer:

A. Rate of backward reaction will increase

Go to Question:

Prev Question

Next Question