Redox Reactions and Electrode Processes
CHXI08:REDOX REACTIONS

315412 Strongest reducing agent is

1 \(\mathrm{K}\)
2 \(\mathrm{Mg}\)
3 Al
4 Ba
CHXI08:REDOX REACTIONS

315413 From the electrochemical series, it can be included that:

1 \(\mathrm{\mathrm{Zn}^{2+}}\) will liberate \(\mathrm{\mathrm{H}_{2}}\) from \(\mathrm{1 \mathrm{M} \mathrm{HCl}}\)
2 Ag metal reacts spontaneously with \(\mathrm{\mathrm{Zn}^{2+}}\)
3 \(\mathrm{\mathrm{Zn}}\) metal will liberate \(\mathrm{\mathrm{H}_{2}}\) from \(\mathrm{1 \mathrm{M} \mathrm{HCl}}\)
4 Ag metal will liberate \(\mathrm{\mathrm{H}_{2}}\) from \(\mathrm{1 \mathrm{M} \mathrm{HCl}}\)
CHXI08:REDOX REACTIONS

315414 The standard electrode potentials of four elements A, B, C and D are \({\rm{ - 3}}{\rm{.05, - 1}}{\rm{.66, - 0}}{\rm{.40}}\,\,{\rm{and}}\,\,{\rm{ + 0}}{\rm{.80}}\). The highest chemical reactivity will be exhibited by :

1 A
2 B
3 C
4 D
CHXI08:REDOX REACTIONS

315415 Consider the following redox couples:
I. \(\mathrm{\mathrm{Zn}^{2+} / \mathrm{Zn}, \mathrm{E}^{\mathrm{o}}=-0.76}\).
II. \(\mathrm{\mathrm{Ag}^{2+} / \mathrm{Ag}, \mathrm{E}^{\mathrm{o}}=+0.80 \mathrm{~V}}\).
III. \(\mathrm{\mathrm{Cu}^{2+} / \mathrm{Cu}, \mathrm{E}^{o}=+0.34 \mathrm{v}}\).
IV. \(\mathrm{\mathrm{Hg}^{2+} / \mathrm{Hg} ; \mathrm{E}^{\mathrm{o}}=+0.885}\)
Which of the above will act as anode when connected to standard hydrogen electrode which has \(\mathrm{\mathrm{E}^{\mathrm{o}}}\) value given as zero?

1 Only I
2 Only III
3 I and II
4 II, III and IV
CHXI08:REDOX REACTIONS

315412 Strongest reducing agent is

1 \(\mathrm{K}\)
2 \(\mathrm{Mg}\)
3 Al
4 Ba
CHXI08:REDOX REACTIONS

315413 From the electrochemical series, it can be included that:

1 \(\mathrm{\mathrm{Zn}^{2+}}\) will liberate \(\mathrm{\mathrm{H}_{2}}\) from \(\mathrm{1 \mathrm{M} \mathrm{HCl}}\)
2 Ag metal reacts spontaneously with \(\mathrm{\mathrm{Zn}^{2+}}\)
3 \(\mathrm{\mathrm{Zn}}\) metal will liberate \(\mathrm{\mathrm{H}_{2}}\) from \(\mathrm{1 \mathrm{M} \mathrm{HCl}}\)
4 Ag metal will liberate \(\mathrm{\mathrm{H}_{2}}\) from \(\mathrm{1 \mathrm{M} \mathrm{HCl}}\)
CHXI08:REDOX REACTIONS

315414 The standard electrode potentials of four elements A, B, C and D are \({\rm{ - 3}}{\rm{.05, - 1}}{\rm{.66, - 0}}{\rm{.40}}\,\,{\rm{and}}\,\,{\rm{ + 0}}{\rm{.80}}\). The highest chemical reactivity will be exhibited by :

1 A
2 B
3 C
4 D
CHXI08:REDOX REACTIONS

315415 Consider the following redox couples:
I. \(\mathrm{\mathrm{Zn}^{2+} / \mathrm{Zn}, \mathrm{E}^{\mathrm{o}}=-0.76}\).
II. \(\mathrm{\mathrm{Ag}^{2+} / \mathrm{Ag}, \mathrm{E}^{\mathrm{o}}=+0.80 \mathrm{~V}}\).
III. \(\mathrm{\mathrm{Cu}^{2+} / \mathrm{Cu}, \mathrm{E}^{o}=+0.34 \mathrm{v}}\).
IV. \(\mathrm{\mathrm{Hg}^{2+} / \mathrm{Hg} ; \mathrm{E}^{\mathrm{o}}=+0.885}\)
Which of the above will act as anode when connected to standard hydrogen electrode which has \(\mathrm{\mathrm{E}^{\mathrm{o}}}\) value given as zero?

1 Only I
2 Only III
3 I and II
4 II, III and IV
CHXI08:REDOX REACTIONS

315412 Strongest reducing agent is

1 \(\mathrm{K}\)
2 \(\mathrm{Mg}\)
3 Al
4 Ba
CHXI08:REDOX REACTIONS

315413 From the electrochemical series, it can be included that:

1 \(\mathrm{\mathrm{Zn}^{2+}}\) will liberate \(\mathrm{\mathrm{H}_{2}}\) from \(\mathrm{1 \mathrm{M} \mathrm{HCl}}\)
2 Ag metal reacts spontaneously with \(\mathrm{\mathrm{Zn}^{2+}}\)
3 \(\mathrm{\mathrm{Zn}}\) metal will liberate \(\mathrm{\mathrm{H}_{2}}\) from \(\mathrm{1 \mathrm{M} \mathrm{HCl}}\)
4 Ag metal will liberate \(\mathrm{\mathrm{H}_{2}}\) from \(\mathrm{1 \mathrm{M} \mathrm{HCl}}\)
CHXI08:REDOX REACTIONS

315414 The standard electrode potentials of four elements A, B, C and D are \({\rm{ - 3}}{\rm{.05, - 1}}{\rm{.66, - 0}}{\rm{.40}}\,\,{\rm{and}}\,\,{\rm{ + 0}}{\rm{.80}}\). The highest chemical reactivity will be exhibited by :

1 A
2 B
3 C
4 D
CHXI08:REDOX REACTIONS

315415 Consider the following redox couples:
I. \(\mathrm{\mathrm{Zn}^{2+} / \mathrm{Zn}, \mathrm{E}^{\mathrm{o}}=-0.76}\).
II. \(\mathrm{\mathrm{Ag}^{2+} / \mathrm{Ag}, \mathrm{E}^{\mathrm{o}}=+0.80 \mathrm{~V}}\).
III. \(\mathrm{\mathrm{Cu}^{2+} / \mathrm{Cu}, \mathrm{E}^{o}=+0.34 \mathrm{v}}\).
IV. \(\mathrm{\mathrm{Hg}^{2+} / \mathrm{Hg} ; \mathrm{E}^{\mathrm{o}}=+0.885}\)
Which of the above will act as anode when connected to standard hydrogen electrode which has \(\mathrm{\mathrm{E}^{\mathrm{o}}}\) value given as zero?

1 Only I
2 Only III
3 I and II
4 II, III and IV
CHXI08:REDOX REACTIONS

315412 Strongest reducing agent is

1 \(\mathrm{K}\)
2 \(\mathrm{Mg}\)
3 Al
4 Ba
CHXI08:REDOX REACTIONS

315413 From the electrochemical series, it can be included that:

1 \(\mathrm{\mathrm{Zn}^{2+}}\) will liberate \(\mathrm{\mathrm{H}_{2}}\) from \(\mathrm{1 \mathrm{M} \mathrm{HCl}}\)
2 Ag metal reacts spontaneously with \(\mathrm{\mathrm{Zn}^{2+}}\)
3 \(\mathrm{\mathrm{Zn}}\) metal will liberate \(\mathrm{\mathrm{H}_{2}}\) from \(\mathrm{1 \mathrm{M} \mathrm{HCl}}\)
4 Ag metal will liberate \(\mathrm{\mathrm{H}_{2}}\) from \(\mathrm{1 \mathrm{M} \mathrm{HCl}}\)
CHXI08:REDOX REACTIONS

315414 The standard electrode potentials of four elements A, B, C and D are \({\rm{ - 3}}{\rm{.05, - 1}}{\rm{.66, - 0}}{\rm{.40}}\,\,{\rm{and}}\,\,{\rm{ + 0}}{\rm{.80}}\). The highest chemical reactivity will be exhibited by :

1 A
2 B
3 C
4 D
CHXI08:REDOX REACTIONS

315415 Consider the following redox couples:
I. \(\mathrm{\mathrm{Zn}^{2+} / \mathrm{Zn}, \mathrm{E}^{\mathrm{o}}=-0.76}\).
II. \(\mathrm{\mathrm{Ag}^{2+} / \mathrm{Ag}, \mathrm{E}^{\mathrm{o}}=+0.80 \mathrm{~V}}\).
III. \(\mathrm{\mathrm{Cu}^{2+} / \mathrm{Cu}, \mathrm{E}^{o}=+0.34 \mathrm{v}}\).
IV. \(\mathrm{\mathrm{Hg}^{2+} / \mathrm{Hg} ; \mathrm{E}^{\mathrm{o}}=+0.885}\)
Which of the above will act as anode when connected to standard hydrogen electrode which has \(\mathrm{\mathrm{E}^{\mathrm{o}}}\) value given as zero?

1 Only I
2 Only III
3 I and II
4 II, III and IV