GKFix MCQ Question

What is the enthalpy change for the reaction: H₂(g) + ½Br₂(l) → HBr(g)?

• A. +36.4 kJ mol⁻¹
• B. –36.4 kJ mol⁻¹
• C. –73.4 kJ mol⁻¹
• D. +73.4 kJ mol⁻¹