00. Electrode Potential
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ELECTROCHEMISTRY

275949 In Daniell cell, anode and cathode are respectively

1 $\mathrm{Zn} \mid \mathrm{Zn}^{2+}$ and $\mathrm{Cu}^{2+} \mid \mathrm{Cu}$
2 $\mathrm{Cu} \mid \mathrm{Cu}^{2+}$ and $\mathrm{Zn}^{2+} \mid \mathrm{Zn}$
3 $\mathrm{Fe} \mid \mathrm{Fe}^{2+}$ and $\mathrm{Cu}^{2+} \mid \mathrm{Cu}$
4 $\mathrm{Cu} \mid \mathrm{Cu}^{2+}$ and $\mathrm{Fe}^{2+} \mid \mathrm{Fe}$
CG PET -2009
ELECTROCHEMISTRY

275928 The standard $E_{\text {red }}^{0}$ values of $A, B, C$ are $0.68 \mathrm{~V}$, $-2.54 \mathrm{~V},-\mathbf{0 . 5 0} \mathrm{V}$ respectively, The order of their reducing power is

1 $\mathrm{A}>\mathrm{B}>\mathrm{C}$
2 $\mathrm{B}>\mathrm{C}>\mathrm{A}$
3 $\mathrm{A}>\mathrm{C}>\mathrm{B}$
4 C $>$ B $>$ A
UP CPMT-2010
ELECTROCHEMISTRY

275930 Consider the following $E^{0}$ values
$\begin{aligned}
\mathrm{E}_{\mathrm{Fe}^{3+} / \mathrm{Fe}^{2+}}^{\circ} & =+0.77 \mathrm{~V} \\
\mathrm{E}_{\mathrm{Sn}^{2+} / \mathrm{Sn}}^{\circ} & =-0.14 \mathrm{~V}
\end{aligned}$
Under standard conditions the potential for the reaction,
$\mathrm{Sn}(\mathrm{s})+2 \mathrm{Fe}^{3+}(\mathrm{aq}) \rightarrow 2 \mathrm{Fe}^{2+}(\mathrm{aq})+\mathrm{Sn}^{2+}(\mathrm{aq})$ is-

1 $1.68 \mathrm{~V}$
2 $1.40 \mathrm{~V}$
3 $0.91 \mathrm{~V}$
4 $0.63 \mathrm{~V}$
BCECE-2010
ELECTROCHEMISTRY

275940 Which of the following is not correct regarding the electrolytic preparation of $\mathrm{H}_{2} \mathrm{O}_{2}$ ?

1 Lead is used as cathode
2 $50 \% \mathrm{H}_{2} \mathrm{SO}_{4}$ is used
3 Hydrogen is liberated at anode
4 Sulphuric acid undergoes oxidation
JIPMER-2009
For More Updates join with Us
ELECTROCHEMISTRY

275949 In Daniell cell, anode and cathode are respectively

1 $\mathrm{Zn} \mid \mathrm{Zn}^{2+}$ and $\mathrm{Cu}^{2+} \mid \mathrm{Cu}$
2 $\mathrm{Cu} \mid \mathrm{Cu}^{2+}$ and $\mathrm{Zn}^{2+} \mid \mathrm{Zn}$
3 $\mathrm{Fe} \mid \mathrm{Fe}^{2+}$ and $\mathrm{Cu}^{2+} \mid \mathrm{Cu}$
4 $\mathrm{Cu} \mid \mathrm{Cu}^{2+}$ and $\mathrm{Fe}^{2+} \mid \mathrm{Fe}$
CG PET -2009
ELECTROCHEMISTRY

275928 The standard $E_{\text {red }}^{0}$ values of $A, B, C$ are $0.68 \mathrm{~V}$, $-2.54 \mathrm{~V},-\mathbf{0 . 5 0} \mathrm{V}$ respectively, The order of their reducing power is

1 $\mathrm{A}>\mathrm{B}>\mathrm{C}$
2 $\mathrm{B}>\mathrm{C}>\mathrm{A}$
3 $\mathrm{A}>\mathrm{C}>\mathrm{B}$
4 C $>$ B $>$ A
UP CPMT-2010
ELECTROCHEMISTRY

275930 Consider the following $E^{0}$ values
$\begin{aligned}
\mathrm{E}_{\mathrm{Fe}^{3+} / \mathrm{Fe}^{2+}}^{\circ} & =+0.77 \mathrm{~V} \\
\mathrm{E}_{\mathrm{Sn}^{2+} / \mathrm{Sn}}^{\circ} & =-0.14 \mathrm{~V}
\end{aligned}$
Under standard conditions the potential for the reaction,
$\mathrm{Sn}(\mathrm{s})+2 \mathrm{Fe}^{3+}(\mathrm{aq}) \rightarrow 2 \mathrm{Fe}^{2+}(\mathrm{aq})+\mathrm{Sn}^{2+}(\mathrm{aq})$ is-

1 $1.68 \mathrm{~V}$
2 $1.40 \mathrm{~V}$
3 $0.91 \mathrm{~V}$
4 $0.63 \mathrm{~V}$
BCECE-2010
ELECTROCHEMISTRY

275940 Which of the following is not correct regarding the electrolytic preparation of $\mathrm{H}_{2} \mathrm{O}_{2}$ ?

1 Lead is used as cathode
2 $50 \% \mathrm{H}_{2} \mathrm{SO}_{4}$ is used
3 Hydrogen is liberated at anode
4 Sulphuric acid undergoes oxidation
JIPMER-2009
NEET DIGITAL LIBRARY
ELECTROCHEMISTRY

275949 In Daniell cell, anode and cathode are respectively

1 $\mathrm{Zn} \mid \mathrm{Zn}^{2+}$ and $\mathrm{Cu}^{2+} \mid \mathrm{Cu}$
2 $\mathrm{Cu} \mid \mathrm{Cu}^{2+}$ and $\mathrm{Zn}^{2+} \mid \mathrm{Zn}$
3 $\mathrm{Fe} \mid \mathrm{Fe}^{2+}$ and $\mathrm{Cu}^{2+} \mid \mathrm{Cu}$
4 $\mathrm{Cu} \mid \mathrm{Cu}^{2+}$ and $\mathrm{Fe}^{2+} \mid \mathrm{Fe}$
CG PET -2009
ELECTROCHEMISTRY

275928 The standard $E_{\text {red }}^{0}$ values of $A, B, C$ are $0.68 \mathrm{~V}$, $-2.54 \mathrm{~V},-\mathbf{0 . 5 0} \mathrm{V}$ respectively, The order of their reducing power is

1 $\mathrm{A}>\mathrm{B}>\mathrm{C}$
2 $\mathrm{B}>\mathrm{C}>\mathrm{A}$
3 $\mathrm{A}>\mathrm{C}>\mathrm{B}$
4 C $>$ B $>$ A
UP CPMT-2010
ELECTROCHEMISTRY

275930 Consider the following $E^{0}$ values
$\begin{aligned}
\mathrm{E}_{\mathrm{Fe}^{3+} / \mathrm{Fe}^{2+}}^{\circ} & =+0.77 \mathrm{~V} \\
\mathrm{E}_{\mathrm{Sn}^{2+} / \mathrm{Sn}}^{\circ} & =-0.14 \mathrm{~V}
\end{aligned}$
Under standard conditions the potential for the reaction,
$\mathrm{Sn}(\mathrm{s})+2 \mathrm{Fe}^{3+}(\mathrm{aq}) \rightarrow 2 \mathrm{Fe}^{2+}(\mathrm{aq})+\mathrm{Sn}^{2+}(\mathrm{aq})$ is-

1 $1.68 \mathrm{~V}$
2 $1.40 \mathrm{~V}$
3 $0.91 \mathrm{~V}$
4 $0.63 \mathrm{~V}$
BCECE-2010
ELECTROCHEMISTRY

275940 Which of the following is not correct regarding the electrolytic preparation of $\mathrm{H}_{2} \mathrm{O}_{2}$ ?

1 Lead is used as cathode
2 $50 \% \mathrm{H}_{2} \mathrm{SO}_{4}$ is used
3 Hydrogen is liberated at anode
4 Sulphuric acid undergoes oxidation
JIPMER-2009
Join With Us for More Updates
ELECTROCHEMISTRY

275949 In Daniell cell, anode and cathode are respectively

1 $\mathrm{Zn} \mid \mathrm{Zn}^{2+}$ and $\mathrm{Cu}^{2+} \mid \mathrm{Cu}$
2 $\mathrm{Cu} \mid \mathrm{Cu}^{2+}$ and $\mathrm{Zn}^{2+} \mid \mathrm{Zn}$
3 $\mathrm{Fe} \mid \mathrm{Fe}^{2+}$ and $\mathrm{Cu}^{2+} \mid \mathrm{Cu}$
4 $\mathrm{Cu} \mid \mathrm{Cu}^{2+}$ and $\mathrm{Fe}^{2+} \mid \mathrm{Fe}$
CG PET -2009
ELECTROCHEMISTRY

275928 The standard $E_{\text {red }}^{0}$ values of $A, B, C$ are $0.68 \mathrm{~V}$, $-2.54 \mathrm{~V},-\mathbf{0 . 5 0} \mathrm{V}$ respectively, The order of their reducing power is

1 $\mathrm{A}>\mathrm{B}>\mathrm{C}$
2 $\mathrm{B}>\mathrm{C}>\mathrm{A}$
3 $\mathrm{A}>\mathrm{C}>\mathrm{B}$
4 C $>$ B $>$ A
UP CPMT-2010
ELECTROCHEMISTRY

275930 Consider the following $E^{0}$ values
$\begin{aligned}
\mathrm{E}_{\mathrm{Fe}^{3+} / \mathrm{Fe}^{2+}}^{\circ} & =+0.77 \mathrm{~V} \\
\mathrm{E}_{\mathrm{Sn}^{2+} / \mathrm{Sn}}^{\circ} & =-0.14 \mathrm{~V}
\end{aligned}$
Under standard conditions the potential for the reaction,
$\mathrm{Sn}(\mathrm{s})+2 \mathrm{Fe}^{3+}(\mathrm{aq}) \rightarrow 2 \mathrm{Fe}^{2+}(\mathrm{aq})+\mathrm{Sn}^{2+}(\mathrm{aq})$ is-

1 $1.68 \mathrm{~V}$
2 $1.40 \mathrm{~V}$
3 $0.91 \mathrm{~V}$
4 $0.63 \mathrm{~V}$
BCECE-2010
ELECTROCHEMISTRY

275940 Which of the following is not correct regarding the electrolytic preparation of $\mathrm{H}_{2} \mathrm{O}_{2}$ ?

1 Lead is used as cathode
2 $50 \% \mathrm{H}_{2} \mathrm{SO}_{4}$ is used
3 Hydrogen is liberated at anode
4 Sulphuric acid undergoes oxidation
JIPMER-2009
For More Updates join with Us