Electrolysis of Molten NaCl (Downs Process)
2NaCl → 2Na + Cl2
Обзор
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.
Участники
| Роль | Вещество | Коэффициент | Состояние |
|---|---|---|---|
| Реагент | Sodium Chloride NaCl | 2 | (l) |
| Продукт | Sodium Na | 2 | (l) |
Пример из жизни
Sodium metal produced by this process is used to make sodium vapor street lights that give a characteristic yellow glow.
Промышленное значение
The Downs process produces metallic sodium used in the manufacture of sodium peroxide, sodium hydride, and as a coolant in fast breeder nuclear reactors.
Свойства
- Тип
- Electrochemical
- Обратимая
- Нет
- Энергия
- Эндотермическая
- ΔH
- 822,0 kJ/mol
- Катализатор
- CaCl₂ (melting point depressant)
Связанные реакции
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)).