Why is HCl employed in flme test?

Explanation

### Step-by-Step Solution:

1. **Understanding the Flame Test**: The flame test is a qualitative analysis technique used to identify the presence of certain metal ions based on the characteristic colors they emit when heated in a flame.

2. **Role of HCl**: Hydrochloric acid (HCl) is employed in the flame test primarily to convert the metal compounds present in the sample into their corresponding metallic chlorides.

3. **Formation of Metallic Chlorides**: When HCl is added to the sample, it reacts with the metal ions to form volatile metallic chlorides. These chlorides are more suitable for the flame test because they can easily vaporize and produce distinct colors when heated.

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