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What change will occur during the electrolysis of brine using carbon electrodes?

Chemistry
NECO 2003

What change will occur during the electrolysis of brine using carbon electrodes?

  • A. Chlorine will be given off at the anode
  • B. Oxygen gas will be given off at the anode
  • C. Sodium will be deposited at the cathode
  • D. The resulting solution, after electrolysis, will be acidic.
  • E. The volumes of hydrogen and chlorine given off during the same time are equal
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Correct Answer: Option A
Explanation

Chlorine is discharged as follows:

\(Cl^- \to Cl + e^-\)

\(Cl + Cl \to Cl_{2(g)}\)

This reaction occurs at the anode.

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