摘要:K+,Ca2+,Mg2+ (4)H2O,2H2O+2K=2KOH + H2 ↑,H2O + Cl2=HClO + HCl (5)NaOH,HBRO4,NaBr,黄,2NaBr+ Cl2=2NaCl+ Br2 3=NaAlO2+ 2H2O,OH-+Al(OH)3=AlO2- + 2H2O (7)CCl4,橙红 (8)18.

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