Consider the following reaction approaching equilibrium at \( 27^\circ \mathrm{C} \) and \( 1 \) atm pressure

The standard Gibb’s energy change \( (\Delta_r G^\theta) \) at \( 27^\circ \mathrm{C} \) is (–) ________ \( \mathrm{kJ\, mol^{-1}} \)
(Nearest integer) (Given: \( R = 8.3 \, \mathrm{J \, K^{-1} \, mol^{-1}} \) and \( \ln 10 = 2.3 \))