Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 5>Q 27

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If a salt bridge is removed from the two half cells, the voltage:

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Important Questions on Electrochemistry

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 5>Q 28

If the pressure of hydrogen gas is increased from

1

atm. to

100 atm

, keeping the hydrogen ion concentration constant at

1 M,

the voltage of the hydrogen half cell is. at

25 ° C

. will be

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 5>Q 29

The standard free energy change for the following reaction is $- 210 kJ$ . What is the standard cell potential?

$2 H_{2} O_{2} (aq) ⟶ 2 H_{2} O (l) + O_{2} (g)$

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 5>Q 30

The weight of silver

(equivalent weight = 108)

displaced by that quantity of current which displaced

5600 mL

of hydrogen at

STP

is:

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 5>Q 31

How many electrons are delivered at the cathode during electrolysis by a Current of

1 A

in

60

seconds?

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 5>Q 32

Time required to deposit one

millimole

of aluminium metal by the passage of

9.65

amperes through aqueous solution of aluminium ion is:

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 5>Q 33

If

x

is the specific resistance

(

in

S^{- 1} cm)

of the electrolyte solution and

y

is the molarity of the solution, then

Λ_{m}

(in

S {cm}^{2} {mol}^{- 1}

) is given by

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 5>Q 34

The standard EMF of a galvanic cell involving cell reaction with

n = 2

is found to be

0.295 V

at

25 ° C

. The equilibrium constant of the reaction would be:(Given

F = 96500 {Cmol}^{- 1}; R = 8.314 {JK}^{- 1} {mol}^{- 1}

)

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 5>Q 35

The standard $EMF$ of a galvanic cell involving cell reaction with $n = 2$ is found to be $0.295 V$ at $25 ° C$ . The equilibrium constant of the reaction would be (Given $F = 96500 C {mol}^{- 1}$ , $R = 8.314 {JK}^{- 1} {mol}^{- 1})$