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Halogen Disproportionation Reactions

Disproportionation is a reaction when one element undergoes oxidation and reduction at the same time.
• Chlorine with water: Cl2 + H2O → HCl + HClO
• Chlorine with cold alkali: Cl2 + 2NaOH → NaCl + NaClO + H2O
• Chlorine with hot alkali: 3Cl2 + 6NaOH → 5 NaCl + NaClO3 + 3H2O

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Specification: Edexcel Chemistry (8CH0), AS-level, Topic 4B: The elements of Group 7 (halogens). Topic: Group 7.

More in Group 7

All 14 lessons in Group 7 · All Edexcel AS-level Chemistry topics