Question

Допишите реакции:1)Zn+HCl;2)H2CO3;3)NaOH+H2So4;4)P2O5+H2O;5)H2S+O2

Answer 1

1. Zn + 2HCl = ZnCl₂ + H₂↑
2. H₂CO₃ = CO₂ + H₂O (над равно t)
3. 2NaOH + H₂SO₄ = Na₂SO₄ + 2H₂O
4. P₂O₅ + 3H₂O = 2H₃PO₄
5. H₂S + O₂ = H₂O + SO₂