Alpha Question Bank for Engineering: Chemistry>Chapter 9 - Electrochemistry>Exercise-4>Q 10

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Consider the following Galvanic cell as shown in figure. By what will value the cell voltage change when concentration of ions in anodic and cathodic compartments are both increased by factor of $10$ at $298 K$ .

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Important Questions on Electrochemistry

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Alpha Question Bank for Engineering: Chemistry>Chapter 9 - Electrochemistry>Exercise-4>Q 11

Pt |{Cl}_{2} (P_{1} atm)| HCl (0.1 M) |{Cl}_{2} (P_{2} atm)| Pt

cell reaction will be spontaneous if:

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Alpha Question Bank for Engineering: Chemistry>Chapter 9 - Electrochemistry>Exercise-4>Q 12

In a cell that utilise the reaction:

Zn (s) + 2 H^{+} (0.1 M) ⟶ {Zn}^{2 +} (aq) + H_{2} (g)

addition of

0.1 {MH}_{2} {SO}_{4}

to cathode compartment will:

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Alpha Question Bank for Engineering: Chemistry>Chapter 9 - Electrochemistry>Exercise-4>Q 13

In the galvanic cell

: Pt (s) |I_{2} (g)| I^{-} (aq) ‖ {Fe}^{3 +} (aq) |{Fe}^{2 +} (aq)| Pt (s)

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Alpha Question Bank for Engineering: Chemistry>Chapter 9 - Electrochemistry>Exercise-4>Q 15

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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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}

at

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: