What happens when (write balanced chemical equations):
Chlorine gas comes in contact with excess of ammonia.

Explanation

To solve the question of what happens when chlorine gas comes in contact with excess ammonia, we need to write the balanced chemical equation for this reaction. Let's go through the steps to derive the balanced equation.

### Step 1: Identify the Reactants
The reactants in this reaction are:
- Chlorine gas (Cl₂)
- Ammonia (NH₃)

### Step 2: Understand the Reaction
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