Question

A reaction, $A+B\to C+D+q$ is found to have a positive entropy change. The reaction will be

• A. possible at high temperature
• B. possible only at low temperature
• C. not possible at any temperature
• D. possible at any temperature

Answer 1

Answer: (D)

$\Delta G=\Delta H-T\Delta S$
For the given reaction,
$\Delta H=-ve$ as it is exothermic,
$\Delta S=+ve$ then $\Delta G=-ve$ .
So, the reaction will be spontaneous at all the temperatures.