What is the electrode potential (in V ) of the following electrode at 25° C ? Ni 2+(0.1 M ) mid Ni (s) (Standard reaction potential of Ni 2+ |Ni is .-0.25 V, (2.303 R T/F)=0.06)

Question

What is the electrode potential (in V ) of the following electrode at 25° C ? Ni 2+(0.1 M ) mid Ni (s) (Standard reaction potential of Ni 2+ |Ni is .-0.25 V, (2.303 R T/F)=0.06) (A) - 0.28 V (B) - 0.34 V (C) - 0.82 V (D) - 0.22 V

Tardigrade Admin · Accepted Answer

E text cell ° =E text cell °-(2.303 R T/n F) log [([ Ni ]/[ Ni 2+])] =-0.25-(0.06/2) log ((1/0.1)) (∵ n=2) =-0.25-0.03 × 1 E text cell =-0.28 V

Q. What is the electrode potential (in $V$ ) of the following electrode at $2 5^{\circ} C$ ?
$N i^{2 +} (0.1 M) ∣ N i (s)$ (Standard reaction potential of $N i^{2 +}$ |Ni is $- 0.25 V, \frac{2.303 RT}{F} = 0.06)$

- 0.28 V

- 0.34 V

- 0.82 V

- 0.22 V

$E_{cell}^{\circ} = E_{cell}^{\circ} - \frac{2.303 RT}{n F} lo g [\frac{[ N i ]}{[ N i ^{2 +} ]}]$
$= - 0.25 - \frac{0.06}{2} lo g (\frac{1}{0.1}) (∵ n = 2)$
$= - 0.25 - 0.03 \times 1$
$E_{cell} = - 0.28 V$

Q. What is the electrode potential (in V ) of the following electrode at 25∘C ? Ni2+(0.1M)∣Ni(s) (Standard reaction potential of Ni2+ |Ni is −0.25V,F2.303RT​=0.06)