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b)MgO+ 2HCl-> MgCl2 + H20
c)Mg(OH)2+ 2HCl-> MgCl2 +2H20
2. a) 2Na+ H2S-> Na2S+ H2
b) Na2O+ H2S-> Na2S+ H2O
c) 2NaOH+ H2S-> Na2S+ 2H2O
3. a) Ca+ 2HNO3-> Ca(NO3)2+ H2
b) CaO+ 2HNO3-> Ca(NO3)2+ H2O
c) Ca(OH)2 + 2HNO3-> Ca(NO3)2+ 2 H2O
4. a) Mg+ H2SO4-> MgSO4+ H2
b) MgO+ H2SO4-> MgSO4 +H2O
c) Mg(OH)2+ H2SO4 -> MgSO4 + 2H2O
Mg + 2HCl → MgCl₂ + H₂
MgO +2HCl → MgCl₂ + H₂O
Mg(OH)₂ +2HCl → MgCl₂ + 2H₂O
2. siarczek sodu
2Na + H₂S → Na₂S + H₂
Na₂O + H₂S → Na₂S + H₂O
2NaOH + H₂S → Na₂S + 2H₂O
3. azotan (V) wapnia
Ca + 2HNO₃ → Ca(NO₃)₂ + H₂
CaO + 2HNO₃ → Ca(NO₃)₂ + H₂O
Ca(OH)₂ + 2HNO₃ → Ca(NO₃)₂ + 2H₂O
4. siarczan (VI) magnezu
Mg + H₂SO₄ → MgSO₄ + H₂
MgO + H₂SO₄ → MgSO₄ + H₂O
Mg(OH)₂ + H₂SO₄ → MgSO₄ + 2H₂O