Electrolysis of Molten NaCl (Downs Process)
2NaCl → 2Na + Cl2
概述
The Downs process electrolyzes molten NaCl at about 600°C (lowered from 801°C by adding CaCl₂) to produce sodium metal at the cathode and chlorine gas at the anode. A cylindrical iron cathode surrounds a graphite anode, with an iron screen separating products. This is the primary industrial method for producing metallic sodium.
参与者
| 角色 | 物质 | 系数 | 状态 |
|---|---|---|---|
| 反应物 | Sodium Chloride NaCl | 2 | (l) |
| 产物 | Sodium Na | 2 | (l) |
日常示例
Sodium metal produced by this process is used to make sodium vapor street lights that give a characteristic yellow glow.
工业重要性
唐斯法是生产金属钠的主要工业方法，钠用于有机合成、核反应堆冷却剂（液态钠）及钛和铀等金属的生产。
属性
- 可逆
- 否
- 能量
- 吸热
- ΔH
- 822.0 kJ/mol
- 催化剂
- CaCl₂ (melting point depressant)
Frequently Asked Questions
What is the equation for Electrolysis of Molten NaCl (Downs Process)?
The balanced equation is: 2NaCl → 2Na + Cl₂.
What type of reaction is Electrolysis of Molten NaCl (Downs Process)?
Electrolysis of Molten NaCl (Downs Process) is a electrochemical reaction.
Is Electrolysis of Molten NaCl (Downs Process) exothermic or endothermic?
Electrolysis of Molten NaCl (Downs Process) is endothermic (absorbs energy). The enthalpy change (ΔH) is 822.0 kJ/mol.
What conditions are needed for Electrolysis of Molten NaCl (Downs Process)?
This reaction requires a catalyst (CaCl₂ (melting point depressant)).