Question
Through a ZnSO4 solution, 0.015 A current was passed for 15 minutes. What is the mass of Zn deposited? (in mg)(Atomic weight of Zn = 65.4)
Answer :
Correct answer is : 5
Charge passed = It
= 0.015 × 15 × 60 C
Moles of electrons passed = (0.015 x 15 x 60)/96500
Moles of Zn deposited = (1/2) x (0.015 x 15 x 60)/96500
Mass of Zn deposited = 0.00007 x 65.4 g = 4.58 mg
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