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

275848 The $E^{0}$ values for $M n$ and $Z n$ are more negative than expected because

1 they have either half-filled and fully-filled configurations
2 they can easily donate electrons
3 it is quite easy to remove electrons from their orbitals
4 None of the above
ELECTROCHEMISTRY

275855 The EMF of the cell $\mathrm{Tl} / \mathrm{Tl}^{+}(0.001 \mathrm{M}) \ \vert$ $\mathrm{Cu}^{2+}(0.01 \mathrm{M}) / \mathrm{Cu}$ is 0.83 . The cell EMF can be increased by

1 Increasing the concentration of $\mathrm{Tl}^{+}$ions.
2 Increasing the concentration of $\mathrm{Cu}^{2+}$ ions
3 Increasing the concentration of $\mathrm{Tl}^{+}$and $\mathrm{Cu}^{2+}$ ions
4 None of these
ELECTROCHEMISTRY

275878 In the cell reaction
$\mathrm{Cu}(\mathrm{s})+2 \mathrm{Ag}^{+}(\mathrm{aq}) \longrightarrow \mathrm{Cu}^{2+}(\mathrm{aq})+2 \mathrm{Ag}(\mathrm{s})$, $E_{\text {cell }}^{0}=0.46 \mathrm{~V}$. By doubling the concentration of $\mathrm{Cu}^{2+}, \mathrm{E}_{\text {cell }}^{\mathbf{o}}$ is

1 Doubled
2 Halved
3 Increased but less than double
4 Decreases by a small fraction
ELECTROCHEMISTRY

275881 In electrolytic refining of copper, the electrodes used are

1 Anode is impure copper plate and cathode is pure nickel plate
2 Anode is pure copper plate and cathode is impure copper plate
3 Anode is impure copper plate and cathode is pure graphite plate
4 Anode is impure copper plate and cathode is pure copper plate
ELECTROCHEMISTRY

275848 The $E^{0}$ values for $M n$ and $Z n$ are more negative than expected because

1 they have either half-filled and fully-filled configurations
2 they can easily donate electrons
3 it is quite easy to remove electrons from their orbitals
4 None of the above
ELECTROCHEMISTRY

275855 The EMF of the cell $\mathrm{Tl} / \mathrm{Tl}^{+}(0.001 \mathrm{M}) \ \vert$ $\mathrm{Cu}^{2+}(0.01 \mathrm{M}) / \mathrm{Cu}$ is 0.83 . The cell EMF can be increased by

1 Increasing the concentration of $\mathrm{Tl}^{+}$ions.
2 Increasing the concentration of $\mathrm{Cu}^{2+}$ ions
3 Increasing the concentration of $\mathrm{Tl}^{+}$and $\mathrm{Cu}^{2+}$ ions
4 None of these
ELECTROCHEMISTRY

275878 In the cell reaction
$\mathrm{Cu}(\mathrm{s})+2 \mathrm{Ag}^{+}(\mathrm{aq}) \longrightarrow \mathrm{Cu}^{2+}(\mathrm{aq})+2 \mathrm{Ag}(\mathrm{s})$, $E_{\text {cell }}^{0}=0.46 \mathrm{~V}$. By doubling the concentration of $\mathrm{Cu}^{2+}, \mathrm{E}_{\text {cell }}^{\mathbf{o}}$ is

1 Doubled
2 Halved
3 Increased but less than double
4 Decreases by a small fraction
ELECTROCHEMISTRY

275881 In electrolytic refining of copper, the electrodes used are

1 Anode is impure copper plate and cathode is pure nickel plate
2 Anode is pure copper plate and cathode is impure copper plate
3 Anode is impure copper plate and cathode is pure graphite plate
4 Anode is impure copper plate and cathode is pure copper plate
ELECTROCHEMISTRY

275848 The $E^{0}$ values for $M n$ and $Z n$ are more negative than expected because

1 they have either half-filled and fully-filled configurations
2 they can easily donate electrons
3 it is quite easy to remove electrons from their orbitals
4 None of the above
ELECTROCHEMISTRY

275855 The EMF of the cell $\mathrm{Tl} / \mathrm{Tl}^{+}(0.001 \mathrm{M}) \ \vert$ $\mathrm{Cu}^{2+}(0.01 \mathrm{M}) / \mathrm{Cu}$ is 0.83 . The cell EMF can be increased by

1 Increasing the concentration of $\mathrm{Tl}^{+}$ions.
2 Increasing the concentration of $\mathrm{Cu}^{2+}$ ions
3 Increasing the concentration of $\mathrm{Tl}^{+}$and $\mathrm{Cu}^{2+}$ ions
4 None of these
ELECTROCHEMISTRY

275878 In the cell reaction
$\mathrm{Cu}(\mathrm{s})+2 \mathrm{Ag}^{+}(\mathrm{aq}) \longrightarrow \mathrm{Cu}^{2+}(\mathrm{aq})+2 \mathrm{Ag}(\mathrm{s})$, $E_{\text {cell }}^{0}=0.46 \mathrm{~V}$. By doubling the concentration of $\mathrm{Cu}^{2+}, \mathrm{E}_{\text {cell }}^{\mathbf{o}}$ is

1 Doubled
2 Halved
3 Increased but less than double
4 Decreases by a small fraction
ELECTROCHEMISTRY

275881 In electrolytic refining of copper, the electrodes used are

1 Anode is impure copper plate and cathode is pure nickel plate
2 Anode is pure copper plate and cathode is impure copper plate
3 Anode is impure copper plate and cathode is pure graphite plate
4 Anode is impure copper plate and cathode is pure copper plate
ELECTROCHEMISTRY

275848 The $E^{0}$ values for $M n$ and $Z n$ are more negative than expected because

1 they have either half-filled and fully-filled configurations
2 they can easily donate electrons
3 it is quite easy to remove electrons from their orbitals
4 None of the above
ELECTROCHEMISTRY

275855 The EMF of the cell $\mathrm{Tl} / \mathrm{Tl}^{+}(0.001 \mathrm{M}) \ \vert$ $\mathrm{Cu}^{2+}(0.01 \mathrm{M}) / \mathrm{Cu}$ is 0.83 . The cell EMF can be increased by

1 Increasing the concentration of $\mathrm{Tl}^{+}$ions.
2 Increasing the concentration of $\mathrm{Cu}^{2+}$ ions
3 Increasing the concentration of $\mathrm{Tl}^{+}$and $\mathrm{Cu}^{2+}$ ions
4 None of these
ELECTROCHEMISTRY

275878 In the cell reaction
$\mathrm{Cu}(\mathrm{s})+2 \mathrm{Ag}^{+}(\mathrm{aq}) \longrightarrow \mathrm{Cu}^{2+}(\mathrm{aq})+2 \mathrm{Ag}(\mathrm{s})$, $E_{\text {cell }}^{0}=0.46 \mathrm{~V}$. By doubling the concentration of $\mathrm{Cu}^{2+}, \mathrm{E}_{\text {cell }}^{\mathbf{o}}$ is

1 Doubled
2 Halved
3 Increased but less than double
4 Decreases by a small fraction
ELECTROCHEMISTRY

275881 In electrolytic refining of copper, the electrodes used are

1 Anode is impure copper plate and cathode is pure nickel plate
2 Anode is pure copper plate and cathode is impure copper plate
3 Anode is impure copper plate and cathode is pure graphite plate
4 Anode is impure copper plate and cathode is pure copper plate