Give reaction of chlorine with hot and concentrates sodium hydroxide. Is this a disproportionation reaction. Justify

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Solution

Dear student,

The reaction of chlorine gas with hot and concentrated sodium hydroxide solution is

3Cl₂ + 6NaOH →→ NaClO₃ + 5NaCl + 3H₂O

Oxidation number of Cl is 0 in Cl₂, -1 in NaCl and +5 in NaClO₃.
In the disproportionation reaction, The product formed shows two different oxidation state of an atom.
Thus, reaction of chlorine with hot and concentrates sodium hydroxide is a disproportionation reaction.

Regards

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