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\(Cu_2S_{(s)}+ O_{2(g)} = 2CU_{(s)} + SO_{2(g)}\). In the above reaction, the oxidation number of Cu...

Chemistry
JAMB 2015

\(Cu_2S_{(s)}+ O_{2(g)} = 2CU_{(s)} + SO_{2(g)}\).

In the above reaction, the oxidation number of Cu changes from ___ to _______?

  • A. +1 to 0
  • B. 0 to +2
  • C. +2 to +1
  • D. 0 to +1
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Correct Answer: Option A
Explanation

The oxidation number is from +1 to O as a result of the release of sulphur. Options B, C, and D are not the actual oxidation number for copper

There is an explanation video available below.

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Explanation Video

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts