The equilibrium constant for a reaction $CO_2(g) + H_2(g) \rightleftharpoons CO(g) + H_2O(g) \: is \: 73$. Calculate the value of standard free energy change.

Question

$\begin {array} {1 1} (a)\;1063.17\: J/mol & \quad (b)\;-1063.17 \: J/mol \\ (c)\;10.632 \: kJ/mol & \quad (d)\;-10.632 \: kJ/mol \end {array}$