What number of moles of Cu 2+ will be deposited by 360 co...
What number of moles of Cu 2+ will be deposited by 360 coulombs of electricity?
[f = 96500 C mol -1]
5.36 x 10 -4 mole
1. 87 x 10 10 -3 mole
9. 35 x 10 -4 mole
3. 73 x 10 -3
Correct answer is B
Cu2+ + 2e−(aq) → Cu(s)
Liberating 1 mole of Cu
2 x 1F = 2 x 96,500C = 193,000C of electricity is needed
Hence, 193,000C = 1 mole
360C of electricity = 360C×1mol193,000C
= 0.001865 mol
= 1.87 x 10−3 moles
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