1)CuSO4 + H2=H2SO4+Cu
2)FeCl3 + 3NH4CNS = Fe(CNS)3 + 3NH4Cl
3)CuSO4+2KOH=K2SO4+Cu(OH)2
4)CuSO4=CuO+SO2+O2
5)AlCl3+KOH=KCl+Al(OH)3
Скажите, пожалуйста, правельно ли я решила
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