Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 76

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The passage of current liberates $H_{2}$ at cathode and ${Cl}_{2}$ at anode. The solution:

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Important Questions on Electrochemistry

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 77

At cathode, the electrolysis of aqueous

{Na}_{2} {SO}_{4}

gives:

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 78

A solution containing one mole per litre of each

Cu {({NO}_{3})}_{2}; {AgNO}_{3}; {Hg}_{2} {({NO}_{3})}_{2}; Mg {({NO}_{3})}_{2}

is being electrolysed by using inert electrodes. The values of standard electrode potentials in volts (reduction potentials) are:

{Ag}^{+} / Ag = + 0.80 V, {Hg}^{+ +} / {Hg}_{2} = + 0.79 V, {Cu}^{+ +} / Cu = + 0.34 V, {Mg}^{+ +} / Mg = - 2.37 V

With increasing voltage, the sequence of deposition of metals on the cathode will be:

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 79

The units of conductivity are

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 80

If the specific resistance of a solution of concentration

Cg

equivalent

{litre}^{- 1}

is

R

, then its equivalent conductance is:

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 81

Tbe specific conductance of a

N / 10 KCl

at

23 ° C

is

0.0112 {ohm}^{- 1} {cm}^{- 1}

. The resistance of cell containing solution at the same temperature was found to be

55

ohms. The cell constant will be

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 82

The specific conductance of a salt of

0.01 M

concentration is

1.061 \times 10^{- 4} S^{- 1} {cm}^{- 1}

. Molar conductance of the same solution will be:

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 83

Which of the following solutions of

NaCl

will have the highest specific conductance?

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 1>Q 84

The electric charge for electrode deposition of one gram equivalent of a substance is: