1) Mg -> MgCl2 -> Mg(OH)2 -> Mg(NO3)2 -> NO2 -> HNO3
Mg + Cl2 = MgCl2
MgCl2 + 2KOH = Mg(OH)2\/ + 2KCl
Mg(OH)2 + 2HNO3 = Mg(NO3)2 + 2H2O
2Mg(NO3)2 t™ = 2MgO + 4 NO2^ + O2^
4NO2 + 2H2O + O2 = 4HNO3
2) Pb -> PbO -> Pb(OH)2 -> (CH3COO)2Pb -> PbI2
2Pb + O2 = 2PbO
PbO + H2O = Pb(OH)2
Pb(OH)2 + 2CH3COOH = (CH3COO)2Pb + 2H2O
(CH3COO)2Pb + 2KI = PbI2\/ + 2 CH3COOK
3) Al -> Al2S3 -> H2S -> H2SO4 -> H2 -> HBr -> KBr
2 Al + 3S t° = Al2S3
Al2S3 + 6 HCl = 2 AlCl3 + 3H2S^
CuSO4 + H2S = H2SO4 + CuS\/
Fe + H2SO4 = FeSO4 + H2^
H2 + Br2 t° = 2HBr^
KOH + HBr = KBr + H2O
Отметь, пожалуйста, как лучший ответ.