Chemistry 9701 · AS & A Level · Electrochemistry

Electrochemistry — practice question

Chlorine gas reacts with cold aqueous sodium hydroxide, and it can also react with hot aqueous sodium hydroxide. What oxidation numbers does chlorine have in the products formed in these reactions?

  • Acold: $-1, +1$ ; hot: $-1, +5$
  • Bcold: $-1, +1$ ; hot: $+1, +6$
  • Ccold: $-1, +2$ ; hot: $-1, +5$
  • Dcold: $-1, +2$ ; hot: $+1, +6$

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