| A．2H2(g)＋O2(g)===2H2O(g)＋Q1 2H2(g)＋O2(g)===2H2O(l)＋Q2 |
| B．S(g)＋O2(g)===SO2(g)＋Q1S(s)＋O2(g)===SO2(g)＋Q2 |
C．C(s)＋ O2(g)===CO(g)＋Q1C(s)＋O2(g)===CO2(g)＋Q2 |
| D．H2(g)＋Cl2(g)===2HCl(g)＋Q1H2(g)＋Cl2(g)===HCl(g)＋Q2 |
| A．2H2(g)＋O2(g)===2H2O(g)＋Q1 2H2(g)＋O2(g)===2H2O(l)＋Q2 |
| B．S(g)＋O2(g)===SO2(g)＋Q1S(s)＋O2(g)===SO2(g)＋Q2 |
| C．C(s)＋O2(g)===CO(g)＋Q1C(s)＋O2(g)===CO2(g)＋Q2 |
| D．H2(g)＋Cl2(g)===2HCl(g)＋Q1H2(g)＋Cl2(g)===HCl(g)＋Q2 |
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