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On reaction with hot and concentrated alkali, a mixture of chloride and chlorate is formed.

1. 3Cl2 + 3NaOH (excess) → Hot
2. 5NaCl + NaClO3 + 3H2O
3. Cl2 + NaOH → NaCl + NaClO3
4. Cl2 + NaOH → NaCl + NaClO

Correct answer: 3Cl2 + 3NaOH (excess) → Hot

Solution

When chlorine reacts with hot and concentrated alkali, it forms a mixture of chloride (NaCl) and chlorate (NaClO3). This is a disproportionation reaction.

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