Given the chemical equilibrium, A ⇌ B + C, where H_ rxn is negati… - Vidyadip

MCQ

Given the chemical equilibrium,$ A ⇌ B + C$, where $\triangle H_{rxn}$ is negative, what effect increasing the temperature $($at constant pressure$)$ would have on the system at equilibrium?

A
No change.
✓
Shift to the left.
C
Shift to the right.
D
Shift to the left for $K<1$ and to the right for $K>1.$

✓

Answer

Correct option: B.

Shift to the left.

$A \rightarrow B + C\ ; \triangle H < 0$
Here, forward reaction is exothermic. So, if temperature is increased then as per Le Chatelier's principle, the equilibrium shifts to left side $($backward direction$)$.

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