NEET2009ChemistryElectrochemistryActual
What is the electrode potential (in V ) of the following electrode at 25^ C ? Ni ²⁺(0.1 M ) Ni (s) (Standard reaction potential of Ni ²⁺ Ni is -0.25 ~V , 2.303 R T F =0.06 )
Options
- A-0.28 V
- B-0.34 V
- C-0.82 V
- D-0.22 V
Correct answer
A. -0.28 V
Step-by-step solution
aligned E_ cell ^ & =E_ cell ^ - 2.303 R T n F [ [ Ni ] [ Ni ²⁺ ] ] & =-0.25- 0.06 2 ( 1 0.1 ) ( n=2) & =-0.25-0.03 1 E_ cell & =-0.28 ~V aligned