Объяснение:
1) 2HCl+MgO=MgCl₂+H₂0
CuO+H₂SO₄=CuSO₄+H₂O
Fe₂O₃+6HCl=2FeCl₃+3H₂O
2) NaOH+HCl=NaOH+H₂O
2KOH+H₂SO₄=K₂SO₄+2H₂O
Cu(OH)₂+2HNO₃=Cu(NO₃)₂+2H₂O
3) 2NaOH+FeSO₄=Fe(OH)₂+Na₂SO₄
2KOH+Zn(NO₃)₂=2KNO₃+Zn(OH)₂
Ba(OH)₂+FeCl₂=BaCl₂+Fe(OH)₂
4) 2HCl+CaCO₃=CaCl₂+CO₂+H₂O
BaCl₂+H₂SO₄=BaSO₄+2HCl
2HCl+Na₂SiO₃=2NaCl+H₂SiO₃