A solution of `Ni(NO_(3))_(2)` is electrolyzed between platium electrodes using a current of `5A` for `20 mi n`. What mass of `Ni` is deposited at the cathode ?

Explanation

Eq. of `Ni` deposited
`(w)/(E) = (i.t)/(96500) = (5 xx 20 xx 60)/(96500) = 0.0622`
or `w_(Ni) = 0.0622 xx 58.71//2 = 1.825 g`
`(Ni^(2+)+2e rarr Ni)`