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JAMB Chemistry 2000 Question 27

Question 27

Electrolysis

Given that M is the mass of substance deposited in an electrolysis and Q the quantity of electricity consumed, then Faraday's law can be written as

  1. A.M = Z/Q
  2. B.M = Q/Z
  3. C.M = Z/2Q
  4. D.M = QZ
Show the answer and explanation

Answer: D (M = QZ)

Explanation

Faraday's first law says the mass deposited is proportional to the charge passed: M = ZQ, where Z is the electrochemical equivalent.