а) 2Al+ 3H2SO4= Al2(SO4)3+ 3H2- 1)
б) ВаCl2+ CuSO4= BaSO4+ CuCl2- 4)
в) KOH+ HCl= KCl+ H2O- 2)
г) CuO+ H2= H2O+ Cu- 3)
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а) 2Al+ 3H2SO4= Al2(SO4)3+ 3H2- 1)
б) ВаCl2+ CuSO4= BaSO4+ CuCl2- 4)
в) KOH+ HCl= KCl+ H2O- 2)
г) CuO+ H2= H2O+ Cu- 3)