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2Al + 2H₃PO₄ ---> 2AlPO₄ + 3H₂
Al(OH)₃ + H₃PO₄ ---> AlPO₄ + 3H₂O
Al₂O₃ + 2H₃PO₄ ---> 2AlPO₄ + 3H₂O
b) KCl --- chlorek potasu
2K + 2HCl ---> 2KCl + H₂
K₂O + 2HCl ---> 2KCl + H₂O
KOH + HCl ---> KCl + H₂O
c) MgSO₃ - siarczan(IV) magnezu
Mg + H₂SO₃ ---> MgSO₃ + H₂
Mg(OH)₂ + H₂SO₃ ---> MgSO₃ + 2H₂O
MgO + H₂SO₃ ---> MgSO₃ + H₂O
d) CaS --- siarczek wapnia
Ca + H₂S ---> CaS + H₂
CaO + H₂S ---> CaS + H₂O
Ca(OH)₂ + H₂S ---> CaS + 2H₂O
e) Na₂CO₃ --- węglan sodu
2Na + H₂CO₃ ---> Na₂CO₃ + H₂
2NaOH + H₂CO₃ ---> Na₂CO₃ + 2H₂O
Na₂O + H₂CO₃ ---> Na₂CO₃ + H₂O
f) Al₂S₃ --- siarczek glinu
2Al + 3H₂S ---> Al₂S₃ + 3H₂
Al₂O₃ + 3H₂S ---> Al₂S₃ + 3H₂O
2Al(OH)₃ + 3H₂S ---> Al₂S₃ + 6H₂O