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JAMB Chemistry 2011 Question 30

Question 30

Electrolysis

Given that M is the mass of a substance deposited during electrolysis and Q is the quantity of electricity consumed, then Faraday's first law can be written as [E = Electrochemical equivalent]

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

Answer: B (M = EQ)

Explanation

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