$2 \, mol$ of zinc is dissolved in $HCl$ at $25 \, ^oC$. What is the work done in an open vessel?

Let us consider an endothermic reaction which is non-spontaneous at the freezing point of water. However,the reaction is spontaneous at the boiling point of water. Choose the correct option.

$A$ reaction at $1 \ bar$ is non-spontaneous at low temperature but becomes spontaneous at high temperature. Identify the correct statement about the reaction among the following:

What is the free energy change $\Delta G$ when $1.0 \ mole$ of water at $100 \ ^oC$ and $1 \ atm$ pressure is converted into steam at $100 \ ^oC$ and $1 \ atm$ pressure?

Identify from the following the correct set of thermodynamic conditions for the reaction to be spontaneous below equilibrium temperature.

The temperature in $K$ at which $\Delta G = 0$, for a given reaction with $\Delta H = -20.5 \ kJ \ mol^{-1}$ and $\Delta S = -50.0 \ J \ K^{-1} \ mol^{-1}$ is: