It appears that you are referencing a figure of a dry Leclanché cell, but I don't have the capability to view images or figures. However, I can provide general information about the dry Leclanché cell and help answer questions based on its features.
The dry Leclanché cell is an early type of electrochemical cell, commonly used in batteries. It typically consists of:
- Anode: Usually made of zinc.
- Cathode: Typically a carbon rod surrounded by a manganese dioxide mixture.
- Electrolyte: Often a paste that contains ammonium chloride (NH₄Cl) or zinc chloride (ZnCl₂).
- Separator: A material that keeps the anode and cathode apart to prevent short-circuiting.
Common Questions and Answers:
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What is the chemical reaction in a dry Leclanché cell?
- The anode reaction involves the oxidation of zinc: \[ \text{Zn} \rightarrow \text{Zn}^{2+} + 2\text{e}^- \]
- The cathode reaction involves the reduction of manganese dioxide, typically with ammonium ions: \[ 2\text{MnO}_2 + \text{2NH}_4^+ + 2\text{e}^- \rightarrow \text{Mn}_2\text{O}_3 + 2\text{NH}_3 + \text{H}_2\text{O} \]
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What are the main applications of a dry Leclanché cell?
- Dry Leclanché cells are commonly used in low-drain devices such as flashlights, remote controls, and clocks.
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What are the advantages of a dry Leclanché cell?
- They are relatively inexpensive and have a good shelf life when stored properly.
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What are the limitations of a dry Leclanché cell?
- They have a limited current output and are not suitable for high-drain applications.
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