摘要:25. 2 B.HF > HCl C.N2 D.b,d (3)Al2O3 + 2OH- = 2AlO2- + H2O H2(g) + 1/2 O2(g) = H2O(l) ,△H = -2akJ/mol 正极. H2 – 2e- + 2OH-= 2H2O

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