1)
2Cu + O₂= 2CuO
CuO + H₂SO₄ = CuSO₄ + H₂O
CuSO₄ + 2KOH =Cu(OH)₂ + K₂SO₄
Cu(OH)₂ = CuO + H₂O
CuO+ H₂ = Cu + H₂O
2
4P + 5O₂ = P₂O₅
P₂O₅ + 3H₂O = 2H₃PO₄
3Ca(OH)₂ + 2H₃PO₄= Ca₃(PO4)₂↓ + 6H₂O
3
O₂ + 4Li = 2Li₂O
Li₂O + H₂O = 2LiOH
2LiOH + H₂SO₄ = Li₂SO₄ + 2H₂O
1)
2Cu + O₂= 2CuO
CuO + H₂SO₄ = CuSO₄ + H₂O
CuSO₄ + 2KOH =Cu(OH)₂ + K₂SO₄
Cu(OH)₂ = CuO + H₂O
CuO+ H₂ = Cu + H₂O
2
4P + 5O₂ = P₂O₅
P₂O₅ + 3H₂O = 2H₃PO₄
3Ca(OH)₂ + 2H₃PO₄= Ca₃(PO4)₂↓ + 6H₂O
3
O₂ + 4Li = 2Li₂O
Li₂O + H₂O = 2LiOH
2LiOH + H₂SO₄ = Li₂SO₄ + 2H₂O