摘要:22.BaS04, Al(0H)3, Ba(OH)2, CuCl2,NaOH (2)Ba2+ +2OH-+2H+ +S042-=BaS04↓ +2H20 Cu2+ +2OH-=Cu(0H)2↓ Ca2++2HC03-+2OH-=CaC03↓+C032-+2H20

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