GKFix MCQ Question

What is the enthalpy change for the reaction 4NH3(g) → 2N2(g) + 6H2(g)?

• A. +183.6 kJ mol⁻¹
• B. –183.6 kJ mol⁻¹
• C. +91.8 kJ mol⁻¹
• D. –91.8 kJ mol⁻¹