Electrochemical Series and Applications
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CHXII03:ELECTROCHEMISTRY

330112 Which one is the wrong statement about electrochemical series?

1 Active metals have negative reduction potentials.
2 Active non metals have positive reduction potentials.
3 Metals above hydrogen liberate hydrogen from acids.
4 Metals below hydrogen are strong reducing agents.
CHXII03:ELECTROCHEMISTRY

330113 Using the data given below find out the strongest reducing agent.
\({\rm{E}}_{{\rm{C}}{{\rm{r}}_{\rm{2}}}{\rm{O}}_{\rm{7}}^{{\rm{2 - }}}{\rm{/C}}{{\rm{r}}^{{\rm{3 + }}}}}^{\rm{o}}{\rm{ = 1}}{\rm{.33V}}\,\,\,\,\,\,\,\,\,\,{\rm{E}}_{{\rm{C}}{{\rm{l}}_{\rm{2}}}{\rm{/C}}{{\rm{l}}^{\rm{ - }}}}^{\rm{o}}{\rm{ = 1}}{\rm{.36V}}\)
\({\rm{E}}_{{\rm{MnO}}_{\rm{4}}^{\rm{ - }}{\rm{/M}}{{\rm{n}}^{{\rm{2 + }}}}}^{\rm{o}}{\rm{ = 1}}{\rm{.51V}}\,\,\,\,\,\,\,\,\,\,{\rm{E}}_{{\rm{C}}{{\rm{r}}^{{\rm{3 + }}}}{\rm{/Cr}}}^{\rm{o}}{\rm{ = 0}}{\rm{.74V}}\)

1 \({\rm{C}}{{\rm{l}}^{\rm{ - }}}\)
2 \({\rm{Cr}}\)
3 \({\rm{C}}{{\rm{r}}^{{\rm{3 + }}}}\)
4 \({\rm{M}}{{\rm{n}}^{{\rm{2 + }}}}\)
CHXII03:ELECTROCHEMISTRY

330114 Given :-
\({\text{F}}{{\text{e}}^{{\text{3 + }}}}{\text{(aq) + }}{{\text{e}}^ - } \to {\text{F}}{{\text{e}}^{{\text{2 + }}}}{\text{(aq);E}}^\circ = + 0.77{\mkern 1mu} {\mkern 1mu} {\text{V}}\)
\({\text{A}}{{\text{l}}^{{\text{3 + }}}}{\text{(aq) + 3}}{{\text{e}}^ - } \to {\text{Al(s);E}}^\circ = - 1.66{\mkern 1mu} {\mkern 1mu} {\text{V}}\)
\({\text{B}}{{\text{r}}_{\text{2}}}{\text{ + 2}}{{\text{e}}^ - } \to 2{\text{B}}{{\text{r}}^ - };\;\;{\text{E}}^\circ = + 1.09\;{\text{V}}\)
Considering the electrode potentials, which of the following represents the correct order of reducing power?

1 \({\rm{Al < B}}{{\rm{r}}^{\rm{ - }}}{\rm{ < F}}{{\rm{e}}^{{\rm{2 + }}}}\)
2 \({\rm{F}}{{\rm{e}}^{{\rm{2 + }}}}{\rm{ < Al < B}}{{\rm{r}}^{\rm{ - }}}\)
3 \({\rm{Al < F}}{{\rm{e}}^{{\rm{2 + }}}}{\rm{ < B}}{{\rm{r}}^{\rm{ - }}}\)
4 \({\rm{B}}{{\rm{r}}^{\rm{ - }}}{\rm{ < F}}{{\rm{e}}^{{\rm{2 + }}}}{\rm{ < Al}}\)
JEE - 2014
CHXII03:ELECTROCHEMISTRY

330115 Zn can displace:

1 Mg from its aqueous solution.
2 Cu from its aqueous solution.
3 Na from its aqueous solution.
4 Al from its aqueous solution.
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CHXII03:ELECTROCHEMISTRY

330112 Which one is the wrong statement about electrochemical series?

1 Active metals have negative reduction potentials.
2 Active non metals have positive reduction potentials.
3 Metals above hydrogen liberate hydrogen from acids.
4 Metals below hydrogen are strong reducing agents.
CHXII03:ELECTROCHEMISTRY

330113 Using the data given below find out the strongest reducing agent.
\({\rm{E}}_{{\rm{C}}{{\rm{r}}_{\rm{2}}}{\rm{O}}_{\rm{7}}^{{\rm{2 - }}}{\rm{/C}}{{\rm{r}}^{{\rm{3 + }}}}}^{\rm{o}}{\rm{ = 1}}{\rm{.33V}}\,\,\,\,\,\,\,\,\,\,{\rm{E}}_{{\rm{C}}{{\rm{l}}_{\rm{2}}}{\rm{/C}}{{\rm{l}}^{\rm{ - }}}}^{\rm{o}}{\rm{ = 1}}{\rm{.36V}}\)
\({\rm{E}}_{{\rm{MnO}}_{\rm{4}}^{\rm{ - }}{\rm{/M}}{{\rm{n}}^{{\rm{2 + }}}}}^{\rm{o}}{\rm{ = 1}}{\rm{.51V}}\,\,\,\,\,\,\,\,\,\,{\rm{E}}_{{\rm{C}}{{\rm{r}}^{{\rm{3 + }}}}{\rm{/Cr}}}^{\rm{o}}{\rm{ = 0}}{\rm{.74V}}\)

1 \({\rm{C}}{{\rm{l}}^{\rm{ - }}}\)
2 \({\rm{Cr}}\)
3 \({\rm{C}}{{\rm{r}}^{{\rm{3 + }}}}\)
4 \({\rm{M}}{{\rm{n}}^{{\rm{2 + }}}}\)
CHXII03:ELECTROCHEMISTRY

330114 Given :-
\({\text{F}}{{\text{e}}^{{\text{3 + }}}}{\text{(aq) + }}{{\text{e}}^ - } \to {\text{F}}{{\text{e}}^{{\text{2 + }}}}{\text{(aq);E}}^\circ = + 0.77{\mkern 1mu} {\mkern 1mu} {\text{V}}\)
\({\text{A}}{{\text{l}}^{{\text{3 + }}}}{\text{(aq) + 3}}{{\text{e}}^ - } \to {\text{Al(s);E}}^\circ = - 1.66{\mkern 1mu} {\mkern 1mu} {\text{V}}\)
\({\text{B}}{{\text{r}}_{\text{2}}}{\text{ + 2}}{{\text{e}}^ - } \to 2{\text{B}}{{\text{r}}^ - };\;\;{\text{E}}^\circ = + 1.09\;{\text{V}}\)
Considering the electrode potentials, which of the following represents the correct order of reducing power?

1 \({\rm{Al < B}}{{\rm{r}}^{\rm{ - }}}{\rm{ < F}}{{\rm{e}}^{{\rm{2 + }}}}\)
2 \({\rm{F}}{{\rm{e}}^{{\rm{2 + }}}}{\rm{ < Al < B}}{{\rm{r}}^{\rm{ - }}}\)
3 \({\rm{Al < F}}{{\rm{e}}^{{\rm{2 + }}}}{\rm{ < B}}{{\rm{r}}^{\rm{ - }}}\)
4 \({\rm{B}}{{\rm{r}}^{\rm{ - }}}{\rm{ < F}}{{\rm{e}}^{{\rm{2 + }}}}{\rm{ < Al}}\)
JEE - 2014
CHXII03:ELECTROCHEMISTRY

330115 Zn can displace:

1 Mg from its aqueous solution.
2 Cu from its aqueous solution.
3 Na from its aqueous solution.
4 Al from its aqueous solution.
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CHXII03:ELECTROCHEMISTRY

330112 Which one is the wrong statement about electrochemical series?

1 Active metals have negative reduction potentials.
2 Active non metals have positive reduction potentials.
3 Metals above hydrogen liberate hydrogen from acids.
4 Metals below hydrogen are strong reducing agents.
CHXII03:ELECTROCHEMISTRY

330113 Using the data given below find out the strongest reducing agent.
\({\rm{E}}_{{\rm{C}}{{\rm{r}}_{\rm{2}}}{\rm{O}}_{\rm{7}}^{{\rm{2 - }}}{\rm{/C}}{{\rm{r}}^{{\rm{3 + }}}}}^{\rm{o}}{\rm{ = 1}}{\rm{.33V}}\,\,\,\,\,\,\,\,\,\,{\rm{E}}_{{\rm{C}}{{\rm{l}}_{\rm{2}}}{\rm{/C}}{{\rm{l}}^{\rm{ - }}}}^{\rm{o}}{\rm{ = 1}}{\rm{.36V}}\)
\({\rm{E}}_{{\rm{MnO}}_{\rm{4}}^{\rm{ - }}{\rm{/M}}{{\rm{n}}^{{\rm{2 + }}}}}^{\rm{o}}{\rm{ = 1}}{\rm{.51V}}\,\,\,\,\,\,\,\,\,\,{\rm{E}}_{{\rm{C}}{{\rm{r}}^{{\rm{3 + }}}}{\rm{/Cr}}}^{\rm{o}}{\rm{ = 0}}{\rm{.74V}}\)

1 \({\rm{C}}{{\rm{l}}^{\rm{ - }}}\)
2 \({\rm{Cr}}\)
3 \({\rm{C}}{{\rm{r}}^{{\rm{3 + }}}}\)
4 \({\rm{M}}{{\rm{n}}^{{\rm{2 + }}}}\)
CHXII03:ELECTROCHEMISTRY

330114 Given :-
\({\text{F}}{{\text{e}}^{{\text{3 + }}}}{\text{(aq) + }}{{\text{e}}^ - } \to {\text{F}}{{\text{e}}^{{\text{2 + }}}}{\text{(aq);E}}^\circ = + 0.77{\mkern 1mu} {\mkern 1mu} {\text{V}}\)
\({\text{A}}{{\text{l}}^{{\text{3 + }}}}{\text{(aq) + 3}}{{\text{e}}^ - } \to {\text{Al(s);E}}^\circ = - 1.66{\mkern 1mu} {\mkern 1mu} {\text{V}}\)
\({\text{B}}{{\text{r}}_{\text{2}}}{\text{ + 2}}{{\text{e}}^ - } \to 2{\text{B}}{{\text{r}}^ - };\;\;{\text{E}}^\circ = + 1.09\;{\text{V}}\)
Considering the electrode potentials, which of the following represents the correct order of reducing power?

1 \({\rm{Al < B}}{{\rm{r}}^{\rm{ - }}}{\rm{ < F}}{{\rm{e}}^{{\rm{2 + }}}}\)
2 \({\rm{F}}{{\rm{e}}^{{\rm{2 + }}}}{\rm{ < Al < B}}{{\rm{r}}^{\rm{ - }}}\)
3 \({\rm{Al < F}}{{\rm{e}}^{{\rm{2 + }}}}{\rm{ < B}}{{\rm{r}}^{\rm{ - }}}\)
4 \({\rm{B}}{{\rm{r}}^{\rm{ - }}}{\rm{ < F}}{{\rm{e}}^{{\rm{2 + }}}}{\rm{ < Al}}\)
JEE - 2014
CHXII03:ELECTROCHEMISTRY

330115 Zn can displace:

1 Mg from its aqueous solution.
2 Cu from its aqueous solution.
3 Na from its aqueous solution.
4 Al from its aqueous solution.
For More Updates join with Us
CHXII03:ELECTROCHEMISTRY

330112 Which one is the wrong statement about electrochemical series?

1 Active metals have negative reduction potentials.
2 Active non metals have positive reduction potentials.
3 Metals above hydrogen liberate hydrogen from acids.
4 Metals below hydrogen are strong reducing agents.
CHXII03:ELECTROCHEMISTRY

330113 Using the data given below find out the strongest reducing agent.
\({\rm{E}}_{{\rm{C}}{{\rm{r}}_{\rm{2}}}{\rm{O}}_{\rm{7}}^{{\rm{2 - }}}{\rm{/C}}{{\rm{r}}^{{\rm{3 + }}}}}^{\rm{o}}{\rm{ = 1}}{\rm{.33V}}\,\,\,\,\,\,\,\,\,\,{\rm{E}}_{{\rm{C}}{{\rm{l}}_{\rm{2}}}{\rm{/C}}{{\rm{l}}^{\rm{ - }}}}^{\rm{o}}{\rm{ = 1}}{\rm{.36V}}\)
\({\rm{E}}_{{\rm{MnO}}_{\rm{4}}^{\rm{ - }}{\rm{/M}}{{\rm{n}}^{{\rm{2 + }}}}}^{\rm{o}}{\rm{ = 1}}{\rm{.51V}}\,\,\,\,\,\,\,\,\,\,{\rm{E}}_{{\rm{C}}{{\rm{r}}^{{\rm{3 + }}}}{\rm{/Cr}}}^{\rm{o}}{\rm{ = 0}}{\rm{.74V}}\)

1 \({\rm{C}}{{\rm{l}}^{\rm{ - }}}\)
2 \({\rm{Cr}}\)
3 \({\rm{C}}{{\rm{r}}^{{\rm{3 + }}}}\)
4 \({\rm{M}}{{\rm{n}}^{{\rm{2 + }}}}\)
CHXII03:ELECTROCHEMISTRY

330114 Given :-
\({\text{F}}{{\text{e}}^{{\text{3 + }}}}{\text{(aq) + }}{{\text{e}}^ - } \to {\text{F}}{{\text{e}}^{{\text{2 + }}}}{\text{(aq);E}}^\circ = + 0.77{\mkern 1mu} {\mkern 1mu} {\text{V}}\)
\({\text{A}}{{\text{l}}^{{\text{3 + }}}}{\text{(aq) + 3}}{{\text{e}}^ - } \to {\text{Al(s);E}}^\circ = - 1.66{\mkern 1mu} {\mkern 1mu} {\text{V}}\)
\({\text{B}}{{\text{r}}_{\text{2}}}{\text{ + 2}}{{\text{e}}^ - } \to 2{\text{B}}{{\text{r}}^ - };\;\;{\text{E}}^\circ = + 1.09\;{\text{V}}\)
Considering the electrode potentials, which of the following represents the correct order of reducing power?

1 \({\rm{Al < B}}{{\rm{r}}^{\rm{ - }}}{\rm{ < F}}{{\rm{e}}^{{\rm{2 + }}}}\)
2 \({\rm{F}}{{\rm{e}}^{{\rm{2 + }}}}{\rm{ < Al < B}}{{\rm{r}}^{\rm{ - }}}\)
3 \({\rm{Al < F}}{{\rm{e}}^{{\rm{2 + }}}}{\rm{ < B}}{{\rm{r}}^{\rm{ - }}}\)
4 \({\rm{B}}{{\rm{r}}^{\rm{ - }}}{\rm{ < F}}{{\rm{e}}^{{\rm{2 + }}}}{\rm{ < Al}}\)
JEE - 2014
CHXII03:ELECTROCHEMISTRY

330115 Zn can displace:

1 Mg from its aqueous solution.
2 Cu from its aqueous solution.
3 Na from its aqueous solution.
4 Al from its aqueous solution.