GKFix MCQ Question

Which of the following is the correct thermochemical equation for the formation of HBr(g)?

• A. H2(g) + Br2(l) → 2HBr(g); ∆rH° = –178.3 kJ mol–1
• B. H2(g) + Br2(g) → 2HBr(g); ∆rH° = –178.3 kJ mol–1
• C. ½H2(g) + ½Br2(l) → HBr(g); ∆fH° = –36.4 kJ mol–1
• D. H2(g) + Br2(l) → HBr(g); ∆fH° = –36.4 kJ mol–1