The increase in entropy in $J K^{-1}$ of a substance when it absorbs $1 \ kJ$ of heat energy at $3 \ K$ is

Let us consider a reversible reaction at temperature,$T$. In this reaction,both $\Delta H$ and $\Delta S$ were observed to have positive values. If the equilibrium temperature is $T_e$,then the reaction becomes spontaneous at:

Of the following,the largest value of entropy at $25^{\circ} C$ and $1 \ atm$ is that of

Provide the mathematical equation for entropy change.

For a spontaneous process,

In a spontaneous process,the entropy of the system and its surroundings