• 1. (2021高二上·呼和浩特月考) 在同温同压下，下列各组热化学方程式中Q₂>Q₁的是（ ）

  A . 2H₂ (g)+O₂ (g) = 2H₂O(g)；DH =－Q₁   2H₂ (g)+O₂ (g) = 2H₂O(l)；DH = －Q₂ B . S(g)+O₂ (g)  SO₂ (g)；DH = －Q₁  S(s)+O₂ (g)  SO₂ (g)；DH = －Q₂ C . C(s)+O₂ (g) = CO₂ (g)；DH = －Q₁      C(s)+1/2O₂ (g) = CO(g)；DH = －Q₂ D . H₂(g)+Cl₂(g) = 2HCl(g)；DH =－Q₁    1/2H₂(g)+1/2Cl₂(g) = HCl(g)；DH =－Q₂