PhysicsConduction of electricity through liquids and gasesWAEC
A current of 2 A passes through copper sulphate solution for 30 minutes. Find the mass of copper deposited. [electrochemical equivalent of copper = 3.3 × 10⁻⁷ kg/C]
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Answer: D. 1.19 × 10⁻³ kg
m = zIt = 3.3 × 10⁻⁷ × 2 × 1800 = 1.19 × 10⁻³ kg. Change minutes to seconds first.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.