Chemistry 9701 · AS & A Level · Electrochemistry

Electrochemistry — practice question

Sulfur dioxide and sulfites are used to preserve food. For what reason are they used in this way?

  • A1, 2 and 3 are correct
  • B1 and 2 only are correct
  • C2 and 3 only are correct
  • D1 only is correct

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