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In the redox reaction\( 2Fe^{2+} + CI_2 → 2Fe^{3+} + 2Cl^-\)

Chemistry
JAMB 1979

In the redox reaction\( 2Fe^{2+} + CI_2 → 2Fe^{3+} + 2Cl^-\)

  • A. Cl2 is reduced because it has lost electrons
  • B. Cl2 is reduced because its oxidation number has decreased
  • C. Cl2 is reduced because its molecule is change to two ions
  • D. Fe2+ is reduced because it has lost electrons
  • E. Fe2+ is reduced because it has gained electrons
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Correct Answer: Option B
Explanation

decrease in oxidation number indicates reduction while an increase in oxidation number indicates oxidation hence chloride gas is reduced because its oxidation number changed from o to -1 

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