1 Electrochemistry
How many electrons flow when a current of 5 amperes is passed through a solution for 200 seconds?
1) 6.24 x 1021
2) 6.2 x 1022
3) 6.02 x 1023
4) 6.024 x 1021
SOLUTION
Q = It = 5×200 = 1000 coulombs
Charge carried by one electron
= 1.6 × 10?¹?C
No. of electrons in 1000 C
=1000/1.6 × 10?¹?
=6.25×10 ²¹
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