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What mass of Cu would be produced by the cathodic reduction of Cu\(^{2+}\)  when 1.60A...

Chemistry
JAMB 2018

What mass of Cu would be produced by the cathodic reduction of Cu\(^{2+}\)  when 1.60A of current passes through a solution of CuSO\(_4\) for 1 hour. (F=96500Cmol\(^{-1}\) , Cu=64)

  • A. 7.64g
  • B. 3.82g
  • C. 1.91g
  • D. 0.96g
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Correct Answer: Option C
Explanation

M = \(\frac{MmIT}{96500n}\)

  Where

  M=mass

  Mm = Molar mass = 64g/mol

  I = current = 1.6A

  T= Time  =1h r=3600s

  N= No of Charge = +2

  M = \(\frac{64x \times 1.6 \times 3600}{96500 \times 2}\)

  M=1.91g

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
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WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995