4P+5O₂=2P₂O₅
2K+2H₂O=2KOH+H₂
K₂O+H₂O=2KOH
3K₂O+2H₃PO₄=2K₃PO₄+3H₂O
2NaOH+H₂S=Na₂S+2H₂O
BaCl₂+H₂SO₄=BaSO₄↓+2HCI
4P+5O₂=2P₂O₅
2K+2H₂O=2KOH+H₂
K₂O+H₂O=2KOH
3K₂O+2H₃PO₄=2K₃PO₄+3H₂O
2NaOH+H₂S=Na₂S+2H₂O
BaCl₂+H₂SO₄=BaSO₄↓+2HCI