# The weight of silver (at.wt. = 108) displaced by a quantity of electricity which displaces 5600 mL of O2 at STP will be : 1. 5.4 g 2. 10.8 g 3. 54.0 g 4. 108.0 g

Subtopic:  Faraday’s Law of Electrolysis |
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A hydrogen gas electrode is made by dipping platinum wire in a solution of HCl of pH = 10 and by passing hydrogen gas around the platinum wire at one atm pressure. The oxidation potential of electrode would be :

1. 0.59 V
2. 0.118 V
3. 1.18 V
4. 0.059 V

Subtopic:  Relation between Emf, G, Kc & pH |
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At 25 ºC molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 ohm–1cm2 mol–1 and at infinite dilution, its molar conductance is 238 ohm–1 cm2 mol–1. The degree of ionization of ammonium hydroxide at the same concentration and temperature is :

1. 20.800%

2. 4.008%

3. 40.800%

4. 2.080%
Subtopic:   Kohlrausch Law & Cell Constant |
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A button cell used in watches functions as following
 Zn(s) + Ag2O(s) + H2O(l) $$\rightleftharpoons$$ 2Ag(s) + Zn2+(aq) + 2OH–(aq)

If half-cell potentials are:

 Zn2+(aq) + 2e–→ Zn(s) Eo = – 0.76 V Ag2O(s) + H2O(l) + 2e– → 2Ag(s) + 2OH–(aq) Eo = 0.34 V

The cell potential will be:

1. 0.42 V

2. 0.84 V

3. 1.34 V

4. 1.10 V

Subtopic:  Electrode & Electrode Potential |
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Limiting molar conductivity of NH4OH (i.e., ${\mathrm{\Lambda }}_{\mathrm{m}\left({\mathrm{NH}}_{4}\mathrm{OH}\right)}^{0}$ is equal to -

1. ${\mathrm{\Lambda }}_{\mathrm{m}\left(\mathrm{NaOH}\right)}^{0}+{\mathrm{\Lambda }}_{\mathrm{m}\left(\mathrm{NaCl}\right)}^{0}-{\mathrm{\Lambda }}_{\mathrm{m}\left(\mathrm{NaOH}\right)}^{0}$

2. ${\mathrm{\Lambda }}_{\mathrm{m}\left(\mathrm{NaOH}\right)}^{0}+{\mathrm{\Lambda }}_{\mathrm{m}\left(\mathrm{NaCl}\right)}^{0}-{\mathrm{\Lambda }}_{\mathrm{m}\left({\mathrm{NH}}_{4}\mathrm{Cl}\right)}^{0}$

3. ${\mathrm{\Lambda }}_{\mathrm{m}\left({\mathrm{NH}}_{4}\mathrm{OH}\right)}^{0}+{\mathrm{\Lambda }}_{\mathrm{m}\left({\mathrm{NH}}_{4}\mathrm{Cl}\right)}^{0}-{\mathrm{\Lambda }}_{\mathrm{m}\left(HCl\right)}^{0}$

4. ${\mathrm{\Lambda }}_{\mathrm{m}\left({\mathrm{NH}}_{4}\mathrm{Cl}\right)}^{0}+{\mathrm{\Lambda }}_{\mathrm{m}\left(\mathrm{NaOH}\right)}^{0}-{\mathrm{\Lambda }}_{\mathrm{m}\left(\mathrm{NaCl}\right)}^{0}$

Subtopic:   Kohlrausch Law & Cell Constant |
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Standard electrode potential of three metals X, Y and Z are -1.2 V, +0.5 V and -3.0 V respectively. The reducing power of these metals will be :

1.  Y > X > Z

2.  Z > X > Y

3.  X > Y > Z

4.  Y > Z > X

Subtopic:  Electrode & Electrode Potential |
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If the  for a given reaction has a negative value, then which of the following gives the correct relationship for the values of ?

1.

2.

3.

4.

Subtopic:  Electrolytic & Electrochemical Cell | Relation between Emf, G, Kc & pH |
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Based on electrode potentials in the table below:
 Cu2+(aq) + e- → Cu+(aq) 0.15 V Cu+(aq) + e- → Cu(s) 0.50 V

The value of $$E_{Cu^{2+}/Cu}^{o}$$ will be:
1. 0.325 V
2. 0650 V
3. 0.150 V
4. 0.500 V

Subtopic:  Electrode & Electrode Potential |
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Standard electrode potential for Sn4+/Sn2+ couple is +0.15 V and that for Cr3+/Cr couple is -0.74. These two couples in their standard state are connected to make a cell. The cell potential will be:

1. +0.89 V

2. +0.18 V

3. +1.83 V

4. +1.199 V

Subtopic:  Electrode & Electrode Potential |
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In producing chlorine by electrolysis, 100 kW power at 125 V is being consumed. How much chlorine per minute is liberated (ECE of chlorine is 0.367 X 10-6 kgC-1)

1.

2.

3.

4.

Subtopic:  Faraday’s Law of Electrolysis |
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh
To view explanation, please take trial in the course below.
NEET 2023 - Target Batch - Aryan Raj Singh