Укажите уравнение окислит-восст. реакции
1)AI(OH)3+3HCI=AICI3+3H2O
2)Pb(NO3)2+Zn=Zn(NO3)2+Pb
3)CaCO3+2HCI=CaCI2+H2O+CO2
4)BaCI2+H2SO4=BaSO4+2HCI
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