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H2SO4 + Zn =
HCl + ZnO =
HNO3 + Ba(OH)2 =
HCl + K2SO3 =
H2SO4 + Zn =
HCl + ZnO =
HNO3 + Ba(OH)2 =
HCl + K2SO3 =
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Answers & Comments
H2SO4 (разб.) + Zn → ZnSO4 + H2 ↑;
2H2SO4 (конц.) + Zn → ZnSO4 + SO2 ↑ + 2H2O;
4H2SO4 (конц.) + 3Zn → 3ZnSO4 + S ↓ + 4H2O;
5H2SO4 (конц.) + 4Zn → 4ZnSO4 + H2S ↑ + 4H2O;
2HCl + ZnO → ZnCl2 + H2O;
2HNO3 + Ba(OH)2 → Ba(NO3)2 + 2H2O;
2HCl + K2SO3 → 2KCl + SO2 ↑ + H2O.