Question

The electrolyte used in Lechlanche cell is

• A. copper sulphate solution
• B. ammonium chloride solution
• C. dilute sulphuric acid
• D. zinc sulphate

Answer 1

The Correct Option is B

The Leclanché cell is a type of primary battery invented by Georges Leclanché in 1866. It is commonly used in various portable devices due to its low cost and reliability. The solution to the question about the electrolyte used in the Leclanché cell can be explained as follows:

The Leclanché cell is known for its simple construction that typically includes:

• A carbon rod that acts as the positive electrode (cathode).
• Manganese dioxide paste surrounding the carbon rod as a depolarizer.
• A zinc container serving as the negative electrode (anode).
• Ammonium chloride solution, which acts as the electrolyte.

The role of the electrolyte is crucial as it facilitates the flow of ions, enabling the chemical reactions necessary to generate electrical energy.

Let's explore each option to understand why ammonium chloride solution is the correct electrolyte for the Leclanché cell:

• Copper sulphate solution: This solution is typically used in Daniell cells, not Leclanché cells.
• Dilute sulphuric acid: Used in lead-acid batteries, not in Leclanché cells.
• Zinc sulphate: Used in certain other types of batteries but not in Leclanché cells.

Therefore, the correct answer is ammonium chloride solution, as it is used in the Leclanché cell to enable ion exchange and facilitate the electrochemical reactions that produce electricity.