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Give reason for each of the following: ...

Give reason for each of the following:
A white thick fume is formed when a glass rod dipped in concentrated hydrochloric acid is brought near the mouth of a bottle full of ammonia gas.

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### Step-by-Step Solution: 1. **Understanding the Reactants**: - We have concentrated hydrochloric acid (HCl) and ammonia gas (NH₃). When these two substances come into contact, a chemical reaction can occur. 2. **Identifying the Reaction**: - Ammonia gas (NH₃) can react with hydrochloric acid (HCl) to form ammonium chloride (NH₄Cl). The reaction can be represented as: \[ ...
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