00. Electrode Potential
ELECTROCHEMISTRY

275838 Given $\mathrm{E}_{\mathrm{Cl}_{2} / \mathrm{Cl}^{-}}^{\mathrm{o}}=1.36 \mathrm{~V}$,
$\mathrm{E}_{\mathrm{Cr}^{3+} / \mathrm{Cr}}^{0}=\mathbf{- 0 . 7 4} \mathrm{V}$
$\mathrm{E}_{\mathrm{Cr}_{0} \mathrm{O}_{7}^{2} / \mathrm{Cr}^{3+}}^{\mathrm{o}}=1.33 \mathrm{~V}$,
$\mathrm{E}_{\mathrm{MnO}_{4}^{-} / \mathrm{Mn}^{2+}}^{\mathrm{o}}=1.51 \mathrm{~V}$
Among the following, the strongest reducing agent is

1 $\mathrm{Cr}$
2 $\mathrm{Mr}^{2+}$
3 $\mathrm{Cr}^{3+}$
4 $\mathrm{Cl}^{-}$
ELECTROCHEMISTRY

275839 The standard emf of galvanic cell involving 3 moles of electrons in its redox reaction is 0.59 $V$. The equilibrium constant for the reaction of the cell is

1 $10^{25}$
2 $10^{20}$
3 $10^{15}$
4 $10^{30}$
ELECTROCHEMISTRY

275840 The value of reaction quotient $(Q)$, for the following cell
$\operatorname{Zn}(\mathrm{s})\left \vert\mathrm{Zn}^{2+}(0.01 \mathrm{M})\right \vert\left \vert\mathrm{Ag}^{+}(1.25 \mathrm{M})\right \vert \mathbf{A g}(\mathrm{s})$ is

1 156
2 125
3 $1.25 \times 10^{-2}$
4 $6.4 \times 10^{-3}$
ELECTROCHEMISTRY

275842 During electrolysis of molten $\mathrm{NaCl}$, some water was added. What will happen?

1 Electrolysis will stop
2 Hydrogen will be evolved
3 Some amount of caustic soda will be formed
4 A fire is likely
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ELECTROCHEMISTRY

275838 Given $\mathrm{E}_{\mathrm{Cl}_{2} / \mathrm{Cl}^{-}}^{\mathrm{o}}=1.36 \mathrm{~V}$,
$\mathrm{E}_{\mathrm{Cr}^{3+} / \mathrm{Cr}}^{0}=\mathbf{- 0 . 7 4} \mathrm{V}$
$\mathrm{E}_{\mathrm{Cr}_{0} \mathrm{O}_{7}^{2} / \mathrm{Cr}^{3+}}^{\mathrm{o}}=1.33 \mathrm{~V}$,
$\mathrm{E}_{\mathrm{MnO}_{4}^{-} / \mathrm{Mn}^{2+}}^{\mathrm{o}}=1.51 \mathrm{~V}$
Among the following, the strongest reducing agent is

1 $\mathrm{Cr}$
2 $\mathrm{Mr}^{2+}$
3 $\mathrm{Cr}^{3+}$
4 $\mathrm{Cl}^{-}$
ELECTROCHEMISTRY

275839 The standard emf of galvanic cell involving 3 moles of electrons in its redox reaction is 0.59 $V$. The equilibrium constant for the reaction of the cell is

1 $10^{25}$
2 $10^{20}$
3 $10^{15}$
4 $10^{30}$
ELECTROCHEMISTRY

275840 The value of reaction quotient $(Q)$, for the following cell
$\operatorname{Zn}(\mathrm{s})\left \vert\mathrm{Zn}^{2+}(0.01 \mathrm{M})\right \vert\left \vert\mathrm{Ag}^{+}(1.25 \mathrm{M})\right \vert \mathbf{A g}(\mathrm{s})$ is

1 156
2 125
3 $1.25 \times 10^{-2}$
4 $6.4 \times 10^{-3}$
ELECTROCHEMISTRY

275842 During electrolysis of molten $\mathrm{NaCl}$, some water was added. What will happen?

1 Electrolysis will stop
2 Hydrogen will be evolved
3 Some amount of caustic soda will be formed
4 A fire is likely
ELECTROCHEMISTRY

275838 Given $\mathrm{E}_{\mathrm{Cl}_{2} / \mathrm{Cl}^{-}}^{\mathrm{o}}=1.36 \mathrm{~V}$,
$\mathrm{E}_{\mathrm{Cr}^{3+} / \mathrm{Cr}}^{0}=\mathbf{- 0 . 7 4} \mathrm{V}$
$\mathrm{E}_{\mathrm{Cr}_{0} \mathrm{O}_{7}^{2} / \mathrm{Cr}^{3+}}^{\mathrm{o}}=1.33 \mathrm{~V}$,
$\mathrm{E}_{\mathrm{MnO}_{4}^{-} / \mathrm{Mn}^{2+}}^{\mathrm{o}}=1.51 \mathrm{~V}$
Among the following, the strongest reducing agent is

1 $\mathrm{Cr}$
2 $\mathrm{Mr}^{2+}$
3 $\mathrm{Cr}^{3+}$
4 $\mathrm{Cl}^{-}$
ELECTROCHEMISTRY

275839 The standard emf of galvanic cell involving 3 moles of electrons in its redox reaction is 0.59 $V$. The equilibrium constant for the reaction of the cell is

1 $10^{25}$
2 $10^{20}$
3 $10^{15}$
4 $10^{30}$
ELECTROCHEMISTRY

275840 The value of reaction quotient $(Q)$, for the following cell
$\operatorname{Zn}(\mathrm{s})\left \vert\mathrm{Zn}^{2+}(0.01 \mathrm{M})\right \vert\left \vert\mathrm{Ag}^{+}(1.25 \mathrm{M})\right \vert \mathbf{A g}(\mathrm{s})$ is

1 156
2 125
3 $1.25 \times 10^{-2}$
4 $6.4 \times 10^{-3}$
ELECTROCHEMISTRY

275842 During electrolysis of molten $\mathrm{NaCl}$, some water was added. What will happen?

1 Electrolysis will stop
2 Hydrogen will be evolved
3 Some amount of caustic soda will be formed
4 A fire is likely
ELECTROCHEMISTRY

275838 Given $\mathrm{E}_{\mathrm{Cl}_{2} / \mathrm{Cl}^{-}}^{\mathrm{o}}=1.36 \mathrm{~V}$,
$\mathrm{E}_{\mathrm{Cr}^{3+} / \mathrm{Cr}}^{0}=\mathbf{- 0 . 7 4} \mathrm{V}$
$\mathrm{E}_{\mathrm{Cr}_{0} \mathrm{O}_{7}^{2} / \mathrm{Cr}^{3+}}^{\mathrm{o}}=1.33 \mathrm{~V}$,
$\mathrm{E}_{\mathrm{MnO}_{4}^{-} / \mathrm{Mn}^{2+}}^{\mathrm{o}}=1.51 \mathrm{~V}$
Among the following, the strongest reducing agent is

1 $\mathrm{Cr}$
2 $\mathrm{Mr}^{2+}$
3 $\mathrm{Cr}^{3+}$
4 $\mathrm{Cl}^{-}$
ELECTROCHEMISTRY

275839 The standard emf of galvanic cell involving 3 moles of electrons in its redox reaction is 0.59 $V$. The equilibrium constant for the reaction of the cell is

1 $10^{25}$
2 $10^{20}$
3 $10^{15}$
4 $10^{30}$
ELECTROCHEMISTRY

275840 The value of reaction quotient $(Q)$, for the following cell
$\operatorname{Zn}(\mathrm{s})\left \vert\mathrm{Zn}^{2+}(0.01 \mathrm{M})\right \vert\left \vert\mathrm{Ag}^{+}(1.25 \mathrm{M})\right \vert \mathbf{A g}(\mathrm{s})$ is

1 156
2 125
3 $1.25 \times 10^{-2}$
4 $6.4 \times 10^{-3}$
ELECTROCHEMISTRY

275842 During electrolysis of molten $\mathrm{NaCl}$, some water was added. What will happen?

1 Electrolysis will stop
2 Hydrogen will be evolved
3 Some amount of caustic soda will be formed
4 A fire is likely