Asked by Praful Gupta
How long will it take an electric current of 0.15ampere to deposit all the copper from 500ml 0.15 M copper sulphate solution
Answers
Answered by
DrBob222
How many coulombs do you need?
96,485 coulombs will deposit (63.55/2)= approx 32 grams Cu. You have mols = M x L = 0.15 x 0.5 = 0.075 and grams = mols x atomic mass so grams = 0.075 x 63.55 = approx 5 g Cu but that's an estimate and you will need to redo that calculation and all others .
Coulombs needed = 96,485 x 5/32 = about 15000.
coulombs = amperes x time in seconds.
You know coulombs and amperes, solve for time in seconds.
96,485 coulombs will deposit (63.55/2)= approx 32 grams Cu. You have mols = M x L = 0.15 x 0.5 = 0.075 and grams = mols x atomic mass so grams = 0.075 x 63.55 = approx 5 g Cu but that's an estimate and you will need to redo that calculation and all others .
Coulombs needed = 96,485 x 5/32 = about 15000.
coulombs = amperes x time in seconds.
You know coulombs and amperes, solve for time in seconds.
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