The electrochemical equivalent of a metal is 3.3 x 10-7 kg per coulomb. The mass of the metal liberated at the cathode when a 3 A current is passed for 2 second will be
19.8 x 10-7 kg
9.9 x 10-7 kg
6.6 x 10-7 kg
1.1 x 10-7 kg
Mass of substance liberated at cathod m = Z it
Z = electro chemical equivalent
i = current flowing = 3A
t = 2 sec
m
Option 1)
19.8 x 10-7 kg
Option 2)
9.9 x 10-7 kg
Option 3)
6.6 x 10-7 kg
Option 4)
1.1 x 10-7 kg
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