State the criteria for a spontaneous process in terms of $\Delta G$ at constant pressure and temperature.

For the reaction $CaCO_3(s) \rightarrow CaO(s) + CO_2(g)$ at $298 \ K$ and $1 \ atm$ pressure,the values of $\Delta H^o$ and $\Delta S^o$ are $+179.1 \ kJ \ mol^{-1}$ and $+160.2 \ J \ K^{-1} \ mol^{-1}$ respectively. Assuming that $\Delta H^o$ and $\Delta S^o$ do not change with temperature,at what temperature (in $K$) will the process become spontaneous?

For a spontaneous reaction at all temperatures,which of the following is correct?

At a temperature of $298 \ K$,if $\Delta H < T \Delta S$,what is the value of the equilibrium constant $K$?

State the criteria for a spontaneous process in terms of $\Delta G$ at constant pressure and temperature.

For a process occurring at constant temperature and pressure,which of the following is true at equilibrium?