Which of the following equations represents the reaction of chlorine with hot concentrated sodium hydroxide solution?

  • A 2KOH+CI2 → KCIO + KCI + H2
  • B 4KOH + 2CI → 4KCI + 2H2O + O2
  • C 6KOH + 3CI2 → KCIO3 + 5KCI + 3H2O
  • D 2KOH + CI2 → 2KCI + H2O2
  • E KOH + 2CI2 + H2O → KCI + 3HCI + O2
waec 1988chemistry

The correct answer is C. 6KOH + 3CI2 → KCIO3 + 5KCI + 3H2O

This equation represents the reaction of chlorine with hot concentrated sodium hydroxide solution, which is a disproportionation reaction.

Chlorine gas is oxidized and reduced to chlorate (ClO<sub>3</sub><sup>-</sup>) ion and chloride (Cl<sup>-</sup>) ion respectively

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