QBManager

CHXII03:ELECTROCHEMISTRY

330116 When a piece of copper wire is immersed in a silver nitrate solution, the colour of the solution turns blue due to

1 Oxidation of silver

2 Reduction of copper

3 Oxidation of copper

4 Formation of a soluble complex

Explanation:

Due to higher SRP, $A g^{+}$ ion undergo reduction and Cu undergo oxidation to produce $C u^{2 +}$ ions which causes blue colour to the solution.

CHXII03:ELECTROCHEMISTRY

330117 What is the standard reduction potential $(E^{o})$ $f o r F e^{3 +} \to F e$ ?
Given that :
$F e^{2 +} + 2 e^{-} \to {F e; E}_{F e^{2 +} / F e}^{o} = - 0 .47 V$
$F e^{3 +} + e^{-} \to F e^{2 +} {; E}_{F e^{3 +} / F e^{2 +}}^{o} = + 0 .77 V$

1

- 0 .057 V

2

+ 0 .30 V

3

- 0 .30 V

4

+ 0 .057 V

Explanation:

${Δ G}_{1}^{o} {= Δ G}_{2}^{o} {+ Δ G}_{3}^{o}$

JEE - 2017

CHXII03:ELECTROCHEMISTRY

330118 Which of the following cannot be considered as an application of electrochemical series?

1 Relative strength of reducing agent

2 Use of SHE in automobile battery

3 Relative strength of oxidising agent

4 Spontaneity of redox reaction

MHTCET - 2022

CHXII03:ELECTROCHEMISTRY

330119 Match the following Column I with type of electrolyte in Column II and choose the correct option from the codes given below.
Column I
Column II
A
$N a C l$
P
2-1 electrolyte
B
$C a C l_{2}$
Q
2-2 electrolyte
C
$M g S O_{4}$
R
1-1 electrolyte

1 A - P, B - R, C - Q

2 A - R, B - Q, C - P

3 A - R, B - P, C - Q

4 A - P, B - Q, C - R

CHXII03:ELECTROCHEMISTRY

330116 When a piece of copper wire is immersed in a silver nitrate solution, the colour of the solution turns blue due to

1 Oxidation of silver

2 Reduction of copper

3 Oxidation of copper

4 Formation of a soluble complex

Explanation:

Due to higher SRP, $A g^{+}$ ion undergo reduction and Cu undergo oxidation to produce $C u^{2 +}$ ions which causes blue colour to the solution.

CHXII03:ELECTROCHEMISTRY

330117 What is the standard reduction potential $(E^{o})$ $f o r F e^{3 +} \to F e$ ?
Given that :
$F e^{2 +} + 2 e^{-} \to {F e; E}_{F e^{2 +} / F e}^{o} = - 0 .47 V$
$F e^{3 +} + e^{-} \to F e^{2 +} {; E}_{F e^{3 +} / F e^{2 +}}^{o} = + 0 .77 V$

1

- 0 .057 V

2

+ 0 .30 V

3

- 0 .30 V

4

+ 0 .057 V

Explanation:

${Δ G}_{1}^{o} {= Δ G}_{2}^{o} {+ Δ G}_{3}^{o}$

JEE - 2017

CHXII03:ELECTROCHEMISTRY

330118 Which of the following cannot be considered as an application of electrochemical series?

1 Relative strength of reducing agent

2 Use of SHE in automobile battery

3 Relative strength of oxidising agent

4 Spontaneity of redox reaction

MHTCET - 2022

CHXII03:ELECTROCHEMISTRY

330119 Match the following Column I with type of electrolyte in Column II and choose the correct option from the codes given below.
Column I
Column II
A
$N a C l$
P
2-1 electrolyte
B
$C a C l_{2}$
Q
2-2 electrolyte
C
$M g S O_{4}$
R
1-1 electrolyte

1 A - P, B - R, C - Q

2 A - R, B - Q, C - P

3 A - R, B - P, C - Q

4 A - P, B - Q, C - R

CHXII03:ELECTROCHEMISTRY

330116 When a piece of copper wire is immersed in a silver nitrate solution, the colour of the solution turns blue due to

1 Oxidation of silver

2 Reduction of copper

3 Oxidation of copper

4 Formation of a soluble complex

Explanation:

Due to higher SRP, $A g^{+}$ ion undergo reduction and Cu undergo oxidation to produce $C u^{2 +}$ ions which causes blue colour to the solution.

CHXII03:ELECTROCHEMISTRY

330117 What is the standard reduction potential $(E^{o})$ $f o r F e^{3 +} \to F e$ ?
Given that :
$F e^{2 +} + 2 e^{-} \to {F e; E}_{F e^{2 +} / F e}^{o} = - 0 .47 V$
$F e^{3 +} + e^{-} \to F e^{2 +} {; E}_{F e^{3 +} / F e^{2 +}}^{o} = + 0 .77 V$

1

- 0 .057 V

2

+ 0 .30 V

3

- 0 .30 V

4

+ 0 .057 V

Explanation:

${Δ G}_{1}^{o} {= Δ G}_{2}^{o} {+ Δ G}_{3}^{o}$

JEE - 2017

CHXII03:ELECTROCHEMISTRY

330118 Which of the following cannot be considered as an application of electrochemical series?

1 Relative strength of reducing agent

2 Use of SHE in automobile battery

3 Relative strength of oxidising agent

4 Spontaneity of redox reaction

MHTCET - 2022

CHXII03:ELECTROCHEMISTRY

330119 Match the following Column I with type of electrolyte in Column II and choose the correct option from the codes given below.
Column I
Column II
A
$N a C l$
P
2-1 electrolyte
B
$C a C l_{2}$
Q
2-2 electrolyte
C
$M g S O_{4}$
R
1-1 electrolyte

1 A - P, B - R, C - Q

2 A - R, B - Q, C - P

3 A - R, B - P, C - Q

4 A - P, B - Q, C - R

CHXII03:ELECTROCHEMISTRY

330116 When a piece of copper wire is immersed in a silver nitrate solution, the colour of the solution turns blue due to

1 Oxidation of silver

2 Reduction of copper

3 Oxidation of copper

4 Formation of a soluble complex

Explanation:

Due to higher SRP, $A g^{+}$ ion undergo reduction and Cu undergo oxidation to produce $C u^{2 +}$ ions which causes blue colour to the solution.

CHXII03:ELECTROCHEMISTRY

330117 What is the standard reduction potential $(E^{o})$ $f o r F e^{3 +} \to F e$ ?
Given that :
$F e^{2 +} + 2 e^{-} \to {F e; E}_{F e^{2 +} / F e}^{o} = - 0 .47 V$
$F e^{3 +} + e^{-} \to F e^{2 +} {; E}_{F e^{3 +} / F e^{2 +}}^{o} = + 0 .77 V$

1

- 0 .057 V

2

+ 0 .30 V

3

- 0 .30 V

4

+ 0 .057 V

Explanation:

${Δ G}_{1}^{o} {= Δ G}_{2}^{o} {+ Δ G}_{3}^{o}$

JEE - 2017

CHXII03:ELECTROCHEMISTRY

330118 Which of the following cannot be considered as an application of electrochemical series?

1 Relative strength of reducing agent

2 Use of SHE in automobile battery

3 Relative strength of oxidising agent

4 Spontaneity of redox reaction

MHTCET - 2022

CHXII03:ELECTROCHEMISTRY

330119 Match the following Column I with type of electrolyte in Column II and choose the correct option from the codes given below.
Column I
Column II
A
$N a C l$
P
2-1 electrolyte
B
$C a C l_{2}$
Q
2-2 electrolyte
C
$M g S O_{4}$
R
1-1 electrolyte

1 A - P, B - R, C - Q

2 A - R, B - Q, C - P

3 A - R, B - P, C - Q

4 A - P, B - Q, C - R