Question

С каким из перечисленных веществ может реагировать вода: K, P205, C, Ba, HCI? Напиишите уравнения соответствующих реакций.

Answer 1

1)2H2O+2K=2KOH+H2.
2)3H2O+P2O5=2H3PO4.
3)2H2O+Ba=Ba(OH)2+H2

Answer 2

Reactivity of Water with Listed Substances

Water can react with the following substances: - K (Potassium): Potassium can react with water to produce potassium hydroxide and hydrogen gas. - P2O5 (Phosphorus Pentoxide): Phosphorus pentoxide reacts with water to form phosphoric acid. - C (Carbon): Carbon does not react with water under normal conditions. - Ba (Barium): Barium reacts with water to form barium hydroxide and hydrogen gas. - HCl (Hydrochloric Acid): Hydrochloric acid is already dissolved in water and does not undergo a separate reaction with water.

Equations for the Corresponding Reactions

1. Potassium (K): - Reaction: 2K(s) + 2H2O(l) → 2KOH(aq) + H2(g) - Source: 2. Phosphorus Pentoxide (P2O5): - Reaction: P2O5(s) + 3H2O(l) → 2H3PO4(aq) - Source: 3. Carbon (C): - Carbon does not react with water under normal conditions. - Source: 4. Barium (Ba): - Reaction: Ba(s) + 2H2O(l) → Ba(OH)2(aq) + H2(g) - Source: 5. Hydrochloric Acid (HCl): - Hydrochloric acid is already dissolved in water and does not undergo a separate reaction with water. - Source: It's important to note that while carbon does not react with water under normal conditions, it can react with steam at high temperatures to form carbon monoxide and hydrogen gas. However, this is not a typical reaction under standard conditions.