Question
Download Solution PDFIdentify the anode material in a Leclanche cell from the given options
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFLeclanche cell:
The experimental structure is shown below:
|
Cell |
Classification |
Positive electrode (Anode) |
Negative electrode (Cathode) |
Electrolyte |
Rated output voltage
|
|
Carbon-Zinc (Leclanche cell) |
Primary |
Carbon |
Zinc |
A mixture of NH4Cl and ZnCl2
|
1.5 V
|
|
Carbon-Zinc (Zinc chloride cell) |
Primary |
Zinc |
MnO2 / C |
Zinc chloride |
1.5 V |
|
Alkaline-Manganese cell |
Primary and Rechargeable |
Zinc |
Manganese dioxide |
An aqueous solution of potassium hydroxide |
1.5 V |
|
Mercuric oxide cell |
Primary |
Zinc |
Mercuric oxide |
An aqueous solution of potassium hydroxide or sodium hydroxide
|
1.35 V |
|
Silver oxide cell |
Primary |
Zinc |
Ag2O |
An aqueous solution of potassium hydroxide or sodium hydroxide |
1.5 V |
|
Nickel-cadmium |
Rechargeable (Secondary) |
Cadmium |
Nickel hydroxide |
An aqueous solution of potassium hydroxide |
1.2 V |
|
Lithium Manganese |
Primary |
Lithium |
Iodine/metallic oxides, sulphides |
Organic, inorganic water |
3 V to 6 V |
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