Chemistry 9701 · AS & A Level · Electrochemistry

Electrochemistry — practice question

When chlorine reacts with sodium hydroxide, the reaction can occur with either cold or hot conditions to give chlorine-containing products. If cold sodium hydroxide gives sodium chlorate($X$), and hot sodium hydroxide gives sodium chlorate($Y$), where $X$ and $Y$ are oxidation numbers, which equation is correct?

  • A$Y = X - 6$
  • B$Y = X - 4$
  • C$Y = X + 4$
  • D$Y = X + 6$

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