Question

The formation of ammonia from $N_2\left(g\right)and{H}_2\left(g\right)$ is a reversible reaction

$N_2\left(g\right)+3H_2\left(g\right)\rightleftharpoons 2NH\left(g\right)+Heat$

What is the effect of the increase in temperature on this equilibrium reaction?

• A. Equilibrium is unaltered
• B. Formation of ammonia is favored
• C. Equilibrium is shifted to the left
• D. Reaction rate does not change

Answer 1

The correct option is C Equilibrium is shifted to the left

On increasing the temperature, the rate of an endothermic reaction increases & the rate of an exothermic reaction decreases, and vice-versa.
Here, the given reaction is exothermic in nature as heat is being released here.
Alternatively,
Increasing the concentration of reactants will increase the rate of the reaction and vice-versa.
Increasing the concentration of products will decrease the rate of the reaction and vice-versa.