Question

Given the reaction, $A\to B+C$, where $\Delta H_{rxn}$ is negative.
How the equilibrium of system is affected by increasing the temperature?

• A. No change
• B. Cannot be determined
• C. Shift to the right
• D. Shift to the left for $K<1$ and to the right for $K>1$
• E. Shift to the left

Answer 1

The correct option is E Shift to the left

The negative value of the enthalpy of the reaction indicates exothermic nature of the reaction. When temperature is increased, the equilibrium will shift to left.
The reverse reaction will absorb heat. This will nullify the effect of increase in temperature.