GKFix MCQ Question

For the reaction 2NH₃(g) → N₂(g) + 3H₂(g), if the forward ∆rH⁰ is –91.8 kJ mol⁻¹, what is the reverse?

• A. –91.8 kJ mol⁻¹
• B. –45.9 kJ mol⁻¹
• C. +91.8 kJ mol⁻¹
• D. +45.9 kJ mol⁻¹