What is the role of `ZnCl_(2)` in dry cell ?

Explanation

### Step-by-Step Solution:

1. **Understanding the Dry Cell**: A dry cell is a type of electrochemical cell that converts chemical energy into electrical energy. It typically consists of an electrolyte paste and electrodes.

2. **Role of Ammonia**: In some dry cells, ammonia (NH3) is present, which can create high pressure within the cell during the electrochemical reactions. This high pressure can potentially lead to the cracking of the cell's seal.

3. **Introduction of ZnCl2**: Zinc chloride (ZnCl2) is added to the dry cell to mitigate the effects of high pressure caused by ammonia.

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