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Grade: upto college level
        Calculate volume of the gases liberated at STP if 1 L of 0.2 M solution of Cuso4 is electrolysed by 5.79 A current for 10000 seconds.
6 years ago

Answers : (1)

Sunil Kumar FP
askIITians Faculty
183 Points
							no of moles of electron=5.79×10000/96500 =.6 mole

cu2+ +2e- ----- cu
.2mole of cu will give .4 mole of electron.
2h+ 2e- -----h2
.2 mole will give .1 mole of h2
2h20 ----'o2 +4h+ 4e-
4 mole will give 1 mole of o2
.6 mole will give.15 mole
total mole of gas= .25
threfore volume =22.4×.25=5.6 lt

thanks and regards
sunil kr
askIItian faculty

6 years ago
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