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For the cell, $Pt |H_{2} (g)| H^{+} (aq) ‖ {Cu}^{2 +} (aq) ∣ Cu (s); E_{Cu / {Cu}^{2 +}}^{ϱ} = - 0.34 V$ .

Then calculate approximate value of $K_{eq} ?$

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Important Questions on Electrochemistry

EASY

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IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 9 - Electrochemistry>Exercise-4>Q 17

The cost of electricity for the production of

' X'

litre

H_{2}

NTP

at cathode is

Rs

X

. Then the cost of electricity for the production

{}^{'}X^{'}

litre

O_{2}

gas at

NTP

at anode will: (assume

1

mole of electrons as one unit of electricity).

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Alpha Question Bank for Engineering: Chemistry>Chapter 9 - Electrochemistry>Exercise-4>Q 18

A current of

0.1 A

was passed for

965

seconds through a solution of

{Cu}^{+}

solution and

0.03175 g

of copper was deposited on the cathode. Calculate the current efficiency for the copper deposition.

(Cu - 63.5)

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Alpha Question Bank for Engineering: Chemistry>Chapter 9 - Electrochemistry>Exercise-4>Q 19

A current is passed through two voltmeters connected in series. The first voltmeter contains

{XSO}_{4}

(aq) while the second voltmeter contains

Y_{2} {SO}_{4}

(aq). The relative atomic masses of

X

and

Y

are in the ratio of

2 : 1

. The ratio of the mass of

X

liberated to the mass of

Y

liberated is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 9 - Electrochemistry>Exercise-4>Q 20

A current of

9.95 amp

following for

10

. minutes, deposits

3 g

of metal. The equivalent weight of the metal is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 9 - Electrochemistry>Exercise-4>Q 21

The ratio of wt. deposited of metal

x, y, z

on passing electric charge in ratio of

1 : 2 : 3

respectively is

3 : 2 : 1

then the ratio of equivalent weights for the above metals respectively is:

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Alpha Question Bank for Engineering: Chemistry>Chapter 9 - Electrochemistry>Exercise-4>Q 24

The specific conductance of

a = 1 M KCl

solution at

23 ° C

0.012 {ohm}^{- 1} {cm}^{- 1} .

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

55 ohm .

The cell constant will be

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Alpha Question Bank for Engineering: Chemistry>Chapter 9 - Electrochemistry>Exercise-4>Q 25

The equivalent conductance of a

N / 10 NaCl

solution at

25 ° C

10^{- 2} {Sm}^{2} {eq}^{- 1} .

Resistance of solution contained in the cell is

50 Ω

cell constant is:

HARD

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Alpha Question Bank for Engineering: Chemistry>Chapter 9 - Electrochemistry>Exercise-4>Q 26

For an $NaCl$ (aq.) solution, which of the following quantities go to zero as $NaCl$ concentration goes to.

(Assume the solvent's contribution to conductivity has been subtracted off).

For the cell, PtH2(g)H+aq‖Cu2+aq∣Cus; ECu/Cu2+ϱ=-0.34 V. Then calculate approximate value of Keq?

Important Questions on Electrochemistry

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For the cell, $Pt |H_{2} (g)| H^{+} (aq) ‖ {Cu}^{2 +} (aq) ∣ Cu (s); E_{Cu / {Cu}^{2 +}}^{ϱ} = - 0.34 V$ .

Then calculate approximate value of $K_{eq} ?$