Question #44467

The electrophilic addition of \ce{Br2} to 4-\textit{tert}-butylcyclohexene in \ce{CCl4} at $300\text{ K}$ yields two possible \textit{trans}-dibromide stereoisomers: the diaxial product (A) and the diequatorial product (B). The thermodynamic parameters for the respective reaction pathways are given below:

\textbf{Pathway A (Diaxial):} $\Delta H^\ddagger = 35.0\text{ kJ/mol}$, $\Delta S^\ddagger = -20.0\text{ J K}^{-1}\text{mol}^{-1}$ $\Delta H^\circ = -110.0\text{ kJ/mol}$, $\Delta S^\circ = -100.0\text{ J K}^{-1}\text{mol}^{-1}$

\textbf{Pathway B (Diequatorial):} $\Delta H^\ddagger = 55.0\text{ kJ/mol}$, $\Delta S^\ddagger = -15.0\text{ J K}^{-1}\text{mol}^{-1}$ $\Delta H^\circ = -130.0\text{ kJ/mol}$, $\Delta S^\circ = -100.0\text{ J K}^{-1}\text{mol}^{-1}$

Determine the standard Gibbs free energy of reaction ($\Delta G^\circ$) for the formation of the major product at $300\text{ K}$.