The solution of nickel sulphate in which nickel rod is dipped is diluted to 10 times. The potential of nickel.
A. Decrease by 60mV
B. Increase by 30V
C. Decreses by 30mV
D. Decreases by 60V.

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1 Answers

Correct Answer - C
`Ni^(2+)+2e^(-)rarrNi`
`E=E^(@)+(0.059)/(2)"log"([Ni^(2+)])/([Ni])`
`=E^(@)+(0.059)/(2)"log"1xx10^(-1)`
`=(E^(@)-0.03)` volts.

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