00. Electrode Potential
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
ELECTROCHEMISTRY

275939 What is the electrode potential (in $V$ ) of the following electrode at $25^{\circ} \mathrm{C}$ ?
$\mathrm{Ni}^{2+}(0.1 \mathrm{M}) \mid \mathrm{Ni}(\mathrm{s})$ (Standard reaction potential of
$\mathrm{Ni}^{2+} \mid \mathrm{Ni}$ is $\left.-0.25 \mathrm{~V}, \frac{2.303 \mathrm{RT}}{\mathrm{F}}=\mathbf{0 . 0 6}\right)$

1 $-0.28 \mathrm{~V}$
2 $-0.34 \mathrm{~V}$
3 $-0.82 \mathrm{~V}$
4 $-0.22 \mathrm{~V}$
ELECTROCHEMISTRY

275942 The standard electrode potential for the halfcell reactions are
$\mathrm{Zn}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Zn} ; \mathbf{E}^{0}=-0.76 \mathrm{~V}$
$\mathrm{Fe}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Fe} ; \mathrm{E}^{0}=-0.44 \mathrm{~V}$
The emf of the cell reaction,
$\mathrm{Fe}^{2+}+\mathrm{Zn} \rightarrow \mathrm{Zn}^{2+}+\mathrm{Fe}$ is

1 $-0.32 \mathrm{~V}$
2 $-1.20 \mathrm{~V}$
3 $+1.20 \mathrm{~V}$
4 $+0.32 \mathrm{~V}$
ELECTROCHEMISTRY

275943 The standard reduction potential for $\mathrm{Mg}^{2+} / \mathrm{Mg}$ is $-2.37 \mathrm{~V}$ and for $\mathrm{Cu}^{2+} / \mathrm{Cu}$ is 0.337. The $\mathrm{E}_{\text {cell }}^{\circ}$ for the following reaction is
$\mathrm{Mg}+\mathrm{Cu}^{2+} \longrightarrow \mathrm{Mg}^{2+}+\mathrm{Cu}$

1 $+2.03 \mathrm{~V}$
2 $-2.03 \mathrm{~V}$
3 $-2.7 \mathrm{~V}$
4 $+2.7 \mathrm{~V}$
ELECTROCHEMISTRY

275944 Given:
(i) $\mathrm{Cu}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Cu}, \mathrm{E}^{0}=0.337 \mathrm{~V}$
(ii) $\mathrm{Cu}^{2+}+\mathrm{e}^{-} \rightarrow \mathrm{Cu}^{+}, \mathrm{E}^{0}=0.153 \mathrm{~V}$
Electrode potential, $\mathrm{E}^{0}$ for the reaction $\mathrm{Cu}^{+}+\mathrm{e}^{-} \rightarrow \mathrm{Cu}$, will be

1 $0.90 \mathrm{~V}$
2 $0.30 \mathrm{~V}$
3 $0.38 \mathrm{~V}$
4 $0.52 \mathrm{~V}$
ELECTROCHEMISTRY

275939 What is the electrode potential (in $V$ ) of the following electrode at $25^{\circ} \mathrm{C}$ ?
$\mathrm{Ni}^{2+}(0.1 \mathrm{M}) \mid \mathrm{Ni}(\mathrm{s})$ (Standard reaction potential of
$\mathrm{Ni}^{2+} \mid \mathrm{Ni}$ is $\left.-0.25 \mathrm{~V}, \frac{2.303 \mathrm{RT}}{\mathrm{F}}=\mathbf{0 . 0 6}\right)$

1 $-0.28 \mathrm{~V}$
2 $-0.34 \mathrm{~V}$
3 $-0.82 \mathrm{~V}$
4 $-0.22 \mathrm{~V}$
ELECTROCHEMISTRY

275942 The standard electrode potential for the halfcell reactions are
$\mathrm{Zn}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Zn} ; \mathbf{E}^{0}=-0.76 \mathrm{~V}$
$\mathrm{Fe}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Fe} ; \mathrm{E}^{0}=-0.44 \mathrm{~V}$
The emf of the cell reaction,
$\mathrm{Fe}^{2+}+\mathrm{Zn} \rightarrow \mathrm{Zn}^{2+}+\mathrm{Fe}$ is

1 $-0.32 \mathrm{~V}$
2 $-1.20 \mathrm{~V}$
3 $+1.20 \mathrm{~V}$
4 $+0.32 \mathrm{~V}$
ELECTROCHEMISTRY

275943 The standard reduction potential for $\mathrm{Mg}^{2+} / \mathrm{Mg}$ is $-2.37 \mathrm{~V}$ and for $\mathrm{Cu}^{2+} / \mathrm{Cu}$ is 0.337. The $\mathrm{E}_{\text {cell }}^{\circ}$ for the following reaction is
$\mathrm{Mg}+\mathrm{Cu}^{2+} \longrightarrow \mathrm{Mg}^{2+}+\mathrm{Cu}$

1 $+2.03 \mathrm{~V}$
2 $-2.03 \mathrm{~V}$
3 $-2.7 \mathrm{~V}$
4 $+2.7 \mathrm{~V}$
ELECTROCHEMISTRY

275944 Given:
(i) $\mathrm{Cu}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Cu}, \mathrm{E}^{0}=0.337 \mathrm{~V}$
(ii) $\mathrm{Cu}^{2+}+\mathrm{e}^{-} \rightarrow \mathrm{Cu}^{+}, \mathrm{E}^{0}=0.153 \mathrm{~V}$
Electrode potential, $\mathrm{E}^{0}$ for the reaction $\mathrm{Cu}^{+}+\mathrm{e}^{-} \rightarrow \mathrm{Cu}$, will be

1 $0.90 \mathrm{~V}$
2 $0.30 \mathrm{~V}$
3 $0.38 \mathrm{~V}$
4 $0.52 \mathrm{~V}$
ELECTROCHEMISTRY

275939 What is the electrode potential (in $V$ ) of the following electrode at $25^{\circ} \mathrm{C}$ ?
$\mathrm{Ni}^{2+}(0.1 \mathrm{M}) \mid \mathrm{Ni}(\mathrm{s})$ (Standard reaction potential of
$\mathrm{Ni}^{2+} \mid \mathrm{Ni}$ is $\left.-0.25 \mathrm{~V}, \frac{2.303 \mathrm{RT}}{\mathrm{F}}=\mathbf{0 . 0 6}\right)$

1 $-0.28 \mathrm{~V}$
2 $-0.34 \mathrm{~V}$
3 $-0.82 \mathrm{~V}$
4 $-0.22 \mathrm{~V}$
ELECTROCHEMISTRY

275942 The standard electrode potential for the halfcell reactions are
$\mathrm{Zn}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Zn} ; \mathbf{E}^{0}=-0.76 \mathrm{~V}$
$\mathrm{Fe}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Fe} ; \mathrm{E}^{0}=-0.44 \mathrm{~V}$
The emf of the cell reaction,
$\mathrm{Fe}^{2+}+\mathrm{Zn} \rightarrow \mathrm{Zn}^{2+}+\mathrm{Fe}$ is

1 $-0.32 \mathrm{~V}$
2 $-1.20 \mathrm{~V}$
3 $+1.20 \mathrm{~V}$
4 $+0.32 \mathrm{~V}$
ELECTROCHEMISTRY

275943 The standard reduction potential for $\mathrm{Mg}^{2+} / \mathrm{Mg}$ is $-2.37 \mathrm{~V}$ and for $\mathrm{Cu}^{2+} / \mathrm{Cu}$ is 0.337. The $\mathrm{E}_{\text {cell }}^{\circ}$ for the following reaction is
$\mathrm{Mg}+\mathrm{Cu}^{2+} \longrightarrow \mathrm{Mg}^{2+}+\mathrm{Cu}$

1 $+2.03 \mathrm{~V}$
2 $-2.03 \mathrm{~V}$
3 $-2.7 \mathrm{~V}$
4 $+2.7 \mathrm{~V}$
ELECTROCHEMISTRY

275944 Given:
(i) $\mathrm{Cu}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Cu}, \mathrm{E}^{0}=0.337 \mathrm{~V}$
(ii) $\mathrm{Cu}^{2+}+\mathrm{e}^{-} \rightarrow \mathrm{Cu}^{+}, \mathrm{E}^{0}=0.153 \mathrm{~V}$
Electrode potential, $\mathrm{E}^{0}$ for the reaction $\mathrm{Cu}^{+}+\mathrm{e}^{-} \rightarrow \mathrm{Cu}$, will be

1 $0.90 \mathrm{~V}$
2 $0.30 \mathrm{~V}$
3 $0.38 \mathrm{~V}$
4 $0.52 \mathrm{~V}$
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
ELECTROCHEMISTRY

275939 What is the electrode potential (in $V$ ) of the following electrode at $25^{\circ} \mathrm{C}$ ?
$\mathrm{Ni}^{2+}(0.1 \mathrm{M}) \mid \mathrm{Ni}(\mathrm{s})$ (Standard reaction potential of
$\mathrm{Ni}^{2+} \mid \mathrm{Ni}$ is $\left.-0.25 \mathrm{~V}, \frac{2.303 \mathrm{RT}}{\mathrm{F}}=\mathbf{0 . 0 6}\right)$

1 $-0.28 \mathrm{~V}$
2 $-0.34 \mathrm{~V}$
3 $-0.82 \mathrm{~V}$
4 $-0.22 \mathrm{~V}$
ELECTROCHEMISTRY

275942 The standard electrode potential for the halfcell reactions are
$\mathrm{Zn}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Zn} ; \mathbf{E}^{0}=-0.76 \mathrm{~V}$
$\mathrm{Fe}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Fe} ; \mathrm{E}^{0}=-0.44 \mathrm{~V}$
The emf of the cell reaction,
$\mathrm{Fe}^{2+}+\mathrm{Zn} \rightarrow \mathrm{Zn}^{2+}+\mathrm{Fe}$ is

1 $-0.32 \mathrm{~V}$
2 $-1.20 \mathrm{~V}$
3 $+1.20 \mathrm{~V}$
4 $+0.32 \mathrm{~V}$
ELECTROCHEMISTRY

275943 The standard reduction potential for $\mathrm{Mg}^{2+} / \mathrm{Mg}$ is $-2.37 \mathrm{~V}$ and for $\mathrm{Cu}^{2+} / \mathrm{Cu}$ is 0.337. The $\mathrm{E}_{\text {cell }}^{\circ}$ for the following reaction is
$\mathrm{Mg}+\mathrm{Cu}^{2+} \longrightarrow \mathrm{Mg}^{2+}+\mathrm{Cu}$

1 $+2.03 \mathrm{~V}$
2 $-2.03 \mathrm{~V}$
3 $-2.7 \mathrm{~V}$
4 $+2.7 \mathrm{~V}$
ELECTROCHEMISTRY

275944 Given:
(i) $\mathrm{Cu}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Cu}, \mathrm{E}^{0}=0.337 \mathrm{~V}$
(ii) $\mathrm{Cu}^{2+}+\mathrm{e}^{-} \rightarrow \mathrm{Cu}^{+}, \mathrm{E}^{0}=0.153 \mathrm{~V}$
Electrode potential, $\mathrm{E}^{0}$ for the reaction $\mathrm{Cu}^{+}+\mathrm{e}^{-} \rightarrow \mathrm{Cu}$, will be

1 $0.90 \mathrm{~V}$
2 $0.30 \mathrm{~V}$
3 $0.38 \mathrm{~V}$
4 $0.52 \mathrm{~V}$