Question

If an endothermic reaction is non-spontaneous at freezing point of water and becomes feasible at its boiling point, then

• A. $\Delta H$ is -ve,$\Delta S$ is +ve
• B. $\Delta H$ & $\Delta S$ both are +ve
• C. $\Delta H$ & $\Delta S$ both are -ve
• D. $\Delta H$ is +ve,$\Delta S$ is -ve

Answer 1

The correct option is B $\Delta H$ & $\Delta S$ both are +ve

Freezing point $\to$ Boiling point
Temperature increases Endothermic process $\Delta$H +ve
Since process becomes feasible with increase in temperature
$\Delta$S should be +ve