Sodium Reacting with Water
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2Na + 2H2O → 2NaOH + H2
概要
Sodium metal reacts violently with water to produce sodium hydroxide and hydrogen gas. The reaction is so exothermic that the hydrogen often ignites, burning with a yellow flame from sodium vapor. The sodium dashes across the water surface as a molten ball due to the heat generated.
参加者
| 役割 | 物質 | 係数 | 状態 |
|---|---|---|---|
| 反応物 | Sodium Na | 2 | (s) |
| 反応物 | Water H₂O | 2 | (l) |
| 生成物 | Hydrogen H | 1 | (g) |
| 生成物 | Sodium Hydroxide NaOH | 2 | (aq) |
日常の例
Videos of alkali metals being thrown into water are popular science demonstrations, showing sodium's dramatic reaction with water.
産業上の重要性
ナトリウムの水との反応性を理解することは、クロルアルカリ工業、原子炉(ナトリウム冷却材)、化学物質貯蔵における安全な取り扱いに不可欠である。
特性
- 可逆的
- いいえ
- エネルギー
- 発熱性
- ΔH
- -368.6 kJ/mol