Zinc-Carbon Battery (Leclanché Cell)

Zn + 2MnO₂ + 2NH₄Cl → ZnCl₂ + Mn₂O₃ + 2NH₃ + H₂O

Обзор

The zinc-carbon cell uses a zinc casing as anode and a carbon rod surrounded by MnO₂ paste as cathode, with ammonium chloride paste electrolyte. Cell voltage is about 1.5 V. Invented by Georges Leclanché in 1866, it was the dominant primary battery for over a century before being largely replaced by alkaline cells.

Участники

Роль	Вещество	Коэффициент	Состояние
Реагент	Zinc Zn	1	(s)
Реагент	Manganese Dioxide MnO₂	2	(s)
Реагент	Ammonium Chloride NH₄Cl	2	(s)
Продукт	Water H₂O	1	(l)

Пример из жизни

The cheapest AA and AAA batteries at the store are zinc-carbon cells, suitable for low-drain devices like remote controls and clocks.

Промышленное значение

Zinc-carbon batteries still account for billions of units sold annually in developing countries due to their low cost.

Свойства

Тип: Electrochemical
Обратимая: Нет
Энергия: Экзотермическая
ΔH: -280,0 kJ/mol

Связанные реакции

Electrolysis of Water Electrolytic Production of Chlorate Electrorefining of Copper Alkaline Battery Discharge Anodizing of Aluminum Cathodic Protection (Zinc Sacrificial Anode) Chlor-Alkali Electrolysis Chrome Electroplating Nickel-Metal Hydride Battery Electrochemical CO₂ Reduction to CO

Frequently Asked Questions

What is the equation for Zinc-Carbon Battery (Leclanché Cell)?

The balanced equation is: Zn + 2MnO₂ + 2NH₄Cl → ZnCl₂ + Mn₂O₃ + 2NH₃ + H₂O.

What type of reaction is Zinc-Carbon Battery (Leclanché Cell)?

Zinc-Carbon Battery (Leclanché Cell) is a electrochemical reaction.

Is Zinc-Carbon Battery (Leclanché Cell) exothermic or endothermic?

Zinc-Carbon Battery (Leclanché Cell) is exothermic (releases energy). The enthalpy change (ΔH) is -280.0 kJ/mol.