1. S+3O₂ = 2SO₃ ;
SO₃+ H₂O = H₂SO₄ ;
H₂SO₄ + 2KOH = K₂SO₄ + 2H₂O
2. 4Na + O₂ = 2Na₂O ;
Na₂O + H₂O= 2NaOH;
NaOH + HCl= NaCl + H₂O
3. 4Al + 3O₂ = 2Al₂O₃ ;
Al₂O₃ + H₂O = Al(OH)₃↓ ;
Al(OH)₃ + 3HCl= AlCl₃ + 3H₂O
1. S+3O₂ = 2SO₃ ;
SO₃+ H₂O = H₂SO₄ ;
H₂SO₄ + 2KOH = K₂SO₄ + 2H₂O
2. 4Na + O₂ = 2Na₂O ;
Na₂O + H₂O= 2NaOH;
NaOH + HCl= NaCl + H₂O
3. 4Al + 3O₂ = 2Al₂O₃ ;
Al₂O₃ + H₂O = Al(OH)₃↓ ;
Al(OH)₃ + 3HCl= AlCl₃ + 3H₂O