A.S(s)+O2(g)→ SO2(g)+ Q1 kJ; S(g)+O2(g)→ SO2(g)+ Q2kJ |
B.2H2(g)+O2(g)→ 2H2O(l)+Q1 kJ ;2H2(g)+O2(g) → 2H2O(g)+Q2 kJ |
C.NaOH(aq)+HCl(aq)→ NaCl(aq)+H2O(l)+Q1 kJ NaOH(aq)+CH3COOH(aq) →CH3COONa(aq)+H2O(l)+Q2 kJ |
D.H2(g)+Cl2(g)→ 2HCl(g)+Q1 kJ, H2(g)+F2(g)→ 2HF(g)+Q2 kJ |