24. All of the following reactions are described as decomposition reactions      except     
(A) PCl5(g) → PCl3(g) + Cl2(g).
(B) 2H2O(g) → 2H2(g) + O2(g).
(C) CH4(g) + Cl2(g) → CH3Cl(g) + HCl(g).
(D) CaCO3(s) → CaO(s) + CO2(g).
(E) 2HgO(s)→2Hg(l)+O2(g)

答案：登入後查看
統計： 尚無統計資料