Electrochemical Series and Applications
« Previous Topic: Electrochemical Cells or Galvanic Cells Next Topic: Electrolytic Cells »
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
CHXII03:ELECTROCHEMISTRY

330103 Standard reduction potentials of the half reactions are given below:
\({F_2}(g) + 2{e^ - } \to 2{F^ - }(aq);{E^o} = + 2.85 V\)
\(C{l_2}(g) + 2{e^ - } \to 2C{l^ - }(aq);{E^o} = + 1.36 V\)
\(B{r_2}(l) + 2{e^ - } \to 2B{r^ - }(aq);{E^o} = + 1.06 V\)
\({I_2}(s) + 2{e^ - } \to 2{l^ - }(aq);{E^o} = + 0.53 V\)
The strongest oxidising and reducing agents respectively are

1 \(C{l_2}\,\,and\,\,B{r^ - }\)
2 \(B{r_2}\,\,and\,\,C{l^ - }\)
3 \({F_2}\,\,and\,\,{I^ - }\)
4 \(C{l_2}\,\,and\,\,{I_2}\)
CHXII03:ELECTROCHEMISTRY

330104 A gas X at 1 atm is bubbled through a solution containing a mixture of \({\rm{1M}}{{\rm{Y}}^{\rm{ - }}}\,\,{\rm{and}}\,\,{\rm{1M}}{{\rm{Z}}^{\rm{ - }}}\,\,{\rm{at}}\,\,{\rm{25^\circ C}}\). If the reduction potential is Z > Y > X, then

1 Y will oxidise X and not Z
2 Y will oxidise Z and not X
3 Y will oxidise both X and Z
4 Y will reduce both X and Z
CHXII03:ELECTROCHEMISTRY

330105 \(\mathrm{Zn}\) gives \(\mathrm{H}_{2}\) gas with \(\mathrm{H}_{2} \mathrm{SO}_{4}\) and \(\mathrm{HCl}\) but not with \(\mathrm{HNO}_{3}\) because:

1 \(\mathrm{Zn}\) acts as oxidising agent when reacts with \(\mathrm{HNO}_{3}\)
2 \(\mathrm{HNO}_{3}\) is weaker acid than \(\mathrm{H}_{2} \mathrm{SO}_{4}\) and \(\mathrm{HCl}\)
3 In electrochemical series, \(\mathrm{Zn}\) is above hydrogen
4 \(\mathrm{NO}_{3}^{-}\)is reduced in preference to hydronium ion
CHXII03:ELECTROCHEMISTRY

330106 Identify the weakest oxidising agent among the following.

1 \({\rm{L}}{{\rm{i}}^{\rm{ + }}}\)
2 \({\rm{N}}{{\rm{a}}^{\rm{ + }}}\)
3 \({\rm{C}}{{\rm{d}}^{{\rm{2 + }}}}\)
4 \({{\rm{l}}_{\rm{2}}}\)
MHTCET - 2017
NEET DIGITAL LIBRARY
CHXII03:ELECTROCHEMISTRY

330103 Standard reduction potentials of the half reactions are given below:
\({F_2}(g) + 2{e^ - } \to 2{F^ - }(aq);{E^o} = + 2.85 V\)
\(C{l_2}(g) + 2{e^ - } \to 2C{l^ - }(aq);{E^o} = + 1.36 V\)
\(B{r_2}(l) + 2{e^ - } \to 2B{r^ - }(aq);{E^o} = + 1.06 V\)
\({I_2}(s) + 2{e^ - } \to 2{l^ - }(aq);{E^o} = + 0.53 V\)
The strongest oxidising and reducing agents respectively are

1 \(C{l_2}\,\,and\,\,B{r^ - }\)
2 \(B{r_2}\,\,and\,\,C{l^ - }\)
3 \({F_2}\,\,and\,\,{I^ - }\)
4 \(C{l_2}\,\,and\,\,{I_2}\)
CHXII03:ELECTROCHEMISTRY

330104 A gas X at 1 atm is bubbled through a solution containing a mixture of \({\rm{1M}}{{\rm{Y}}^{\rm{ - }}}\,\,{\rm{and}}\,\,{\rm{1M}}{{\rm{Z}}^{\rm{ - }}}\,\,{\rm{at}}\,\,{\rm{25^\circ C}}\). If the reduction potential is Z > Y > X, then

1 Y will oxidise X and not Z
2 Y will oxidise Z and not X
3 Y will oxidise both X and Z
4 Y will reduce both X and Z
CHXII03:ELECTROCHEMISTRY

330105 \(\mathrm{Zn}\) gives \(\mathrm{H}_{2}\) gas with \(\mathrm{H}_{2} \mathrm{SO}_{4}\) and \(\mathrm{HCl}\) but not with \(\mathrm{HNO}_{3}\) because:

1 \(\mathrm{Zn}\) acts as oxidising agent when reacts with \(\mathrm{HNO}_{3}\)
2 \(\mathrm{HNO}_{3}\) is weaker acid than \(\mathrm{H}_{2} \mathrm{SO}_{4}\) and \(\mathrm{HCl}\)
3 In electrochemical series, \(\mathrm{Zn}\) is above hydrogen
4 \(\mathrm{NO}_{3}^{-}\)is reduced in preference to hydronium ion
CHXII03:ELECTROCHEMISTRY

330106 Identify the weakest oxidising agent among the following.

1 \({\rm{L}}{{\rm{i}}^{\rm{ + }}}\)
2 \({\rm{N}}{{\rm{a}}^{\rm{ + }}}\)
3 \({\rm{C}}{{\rm{d}}^{{\rm{2 + }}}}\)
4 \({{\rm{l}}_{\rm{2}}}\)
MHTCET - 2017
Join With Us for More Updates
CHXII03:ELECTROCHEMISTRY

330103 Standard reduction potentials of the half reactions are given below:
\({F_2}(g) + 2{e^ - } \to 2{F^ - }(aq);{E^o} = + 2.85 V\)
\(C{l_2}(g) + 2{e^ - } \to 2C{l^ - }(aq);{E^o} = + 1.36 V\)
\(B{r_2}(l) + 2{e^ - } \to 2B{r^ - }(aq);{E^o} = + 1.06 V\)
\({I_2}(s) + 2{e^ - } \to 2{l^ - }(aq);{E^o} = + 0.53 V\)
The strongest oxidising and reducing agents respectively are

1 \(C{l_2}\,\,and\,\,B{r^ - }\)
2 \(B{r_2}\,\,and\,\,C{l^ - }\)
3 \({F_2}\,\,and\,\,{I^ - }\)
4 \(C{l_2}\,\,and\,\,{I_2}\)
CHXII03:ELECTROCHEMISTRY

330104 A gas X at 1 atm is bubbled through a solution containing a mixture of \({\rm{1M}}{{\rm{Y}}^{\rm{ - }}}\,\,{\rm{and}}\,\,{\rm{1M}}{{\rm{Z}}^{\rm{ - }}}\,\,{\rm{at}}\,\,{\rm{25^\circ C}}\). If the reduction potential is Z > Y > X, then

1 Y will oxidise X and not Z
2 Y will oxidise Z and not X
3 Y will oxidise both X and Z
4 Y will reduce both X and Z
CHXII03:ELECTROCHEMISTRY

330105 \(\mathrm{Zn}\) gives \(\mathrm{H}_{2}\) gas with \(\mathrm{H}_{2} \mathrm{SO}_{4}\) and \(\mathrm{HCl}\) but not with \(\mathrm{HNO}_{3}\) because:

1 \(\mathrm{Zn}\) acts as oxidising agent when reacts with \(\mathrm{HNO}_{3}\)
2 \(\mathrm{HNO}_{3}\) is weaker acid than \(\mathrm{H}_{2} \mathrm{SO}_{4}\) and \(\mathrm{HCl}\)
3 In electrochemical series, \(\mathrm{Zn}\) is above hydrogen
4 \(\mathrm{NO}_{3}^{-}\)is reduced in preference to hydronium ion
CHXII03:ELECTROCHEMISTRY

330106 Identify the weakest oxidising agent among the following.

1 \({\rm{L}}{{\rm{i}}^{\rm{ + }}}\)
2 \({\rm{N}}{{\rm{a}}^{\rm{ + }}}\)
3 \({\rm{C}}{{\rm{d}}^{{\rm{2 + }}}}\)
4 \({{\rm{l}}_{\rm{2}}}\)
MHTCET - 2017
For More Updates join with Us
CHXII03:ELECTROCHEMISTRY

330103 Standard reduction potentials of the half reactions are given below:
\({F_2}(g) + 2{e^ - } \to 2{F^ - }(aq);{E^o} = + 2.85 V\)
\(C{l_2}(g) + 2{e^ - } \to 2C{l^ - }(aq);{E^o} = + 1.36 V\)
\(B{r_2}(l) + 2{e^ - } \to 2B{r^ - }(aq);{E^o} = + 1.06 V\)
\({I_2}(s) + 2{e^ - } \to 2{l^ - }(aq);{E^o} = + 0.53 V\)
The strongest oxidising and reducing agents respectively are

1 \(C{l_2}\,\,and\,\,B{r^ - }\)
2 \(B{r_2}\,\,and\,\,C{l^ - }\)
3 \({F_2}\,\,and\,\,{I^ - }\)
4 \(C{l_2}\,\,and\,\,{I_2}\)
CHXII03:ELECTROCHEMISTRY

330104 A gas X at 1 atm is bubbled through a solution containing a mixture of \({\rm{1M}}{{\rm{Y}}^{\rm{ - }}}\,\,{\rm{and}}\,\,{\rm{1M}}{{\rm{Z}}^{\rm{ - }}}\,\,{\rm{at}}\,\,{\rm{25^\circ C}}\). If the reduction potential is Z > Y > X, then

1 Y will oxidise X and not Z
2 Y will oxidise Z and not X
3 Y will oxidise both X and Z
4 Y will reduce both X and Z
CHXII03:ELECTROCHEMISTRY

330105 \(\mathrm{Zn}\) gives \(\mathrm{H}_{2}\) gas with \(\mathrm{H}_{2} \mathrm{SO}_{4}\) and \(\mathrm{HCl}\) but not with \(\mathrm{HNO}_{3}\) because:

1 \(\mathrm{Zn}\) acts as oxidising agent when reacts with \(\mathrm{HNO}_{3}\)
2 \(\mathrm{HNO}_{3}\) is weaker acid than \(\mathrm{H}_{2} \mathrm{SO}_{4}\) and \(\mathrm{HCl}\)
3 In electrochemical series, \(\mathrm{Zn}\) is above hydrogen
4 \(\mathrm{NO}_{3}^{-}\)is reduced in preference to hydronium ion
CHXII03:ELECTROCHEMISTRY

330106 Identify the weakest oxidising agent among the following.

1 \({\rm{L}}{{\rm{i}}^{\rm{ + }}}\)
2 \({\rm{N}}{{\rm{a}}^{\rm{ + }}}\)
3 \({\rm{C}}{{\rm{d}}^{{\rm{2 + }}}}\)
4 \({{\rm{l}}_{\rm{2}}}\)
MHTCET - 2017
NEET DIGITAL LIBRARY