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CHEMISTRY

JAMB 2017 - Question 14

Chemistry 2017 JAMB Past Questions - Question 14: Calculate the mass of copper deposited when a current of 0.5ampere was passed through a solution of copper (II) chloride for 45 mins in an electrolytic cell -1>.

Choose the most appropriate option for the gap .

Calculate the mass of copper deposited when a current of 0.5ampere was passed through a solution of copper (II) chloride for 45 mins in an electrolytic cell -1>.

A: 0.300g

B: 0.250g

C: 0.244g

D: 0.448g

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Correct Answer

Explanation

Q=It =0.5*45*60=1350CCu2+2e Cus ,96500*2=193000C1350C 64/19300*1350g of Cu=0.448b of Cu