N 2 O 4(aq) leftharpoons 2NO 2(g) H = +ve In the reaction above, an increase in temperature will

Correct Answer is : Increase the value of the equilibrium constant

Increase the reactant production

Shift the equilibrium to the left

Decrease the value of the equilibrium constant

Correct Answer is : Increase the value of the equilibrium constant

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JAMB Chemistry 2016 Paper

Question : 50

Total: 50

N₂O_4(aq)

\rightleftharpoons

\triangle

In the reaction above, an increase in temperature will

Solution:

Concept:

For an endothermic reaction, an increase in temperature favours the forward reaction and increases the equilibrium constant.

Explanation:

The reaction is endothermic because

\Delta H = +\text{ve}

Increasing temperature shifts the equilibrium in the direction that absorbs heat, which is the forward direction.

This increases production of

\mathrm{NO_2}

and decreases production of

\mathrm{N_2O_4}

For an endothermic reaction, a rise in temperature increases the value of

K

Answer:

B. Increase the value of the equilibrium constant

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