Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 2>Q 1

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Which of the following is/are function(s) of salt - bridge?

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Important Questions on Electrochemistry

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 2>Q 2

KCl

can't be used in salt bridge if electrolyte of a galvanic cell contains:

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 2>Q 3

In the galvanic cell $Cu |{Cu}^{2 +} (1 M)| |{Ag}^{+} (1 M)| Ag,$ the electrons will travel in the external circuit:

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 2>Q 4

The chemical reaction

$2 AgCl (s) + H_{2} (g) ⟶ 2 HCl (aq) + 2 Ag (s)$

takinq place in a galvanic cell is represented by the notation

$2 AgCl (s) + H_{2} (g) ⟶ 2 HCl (aq) + 2 Ag (s)$

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 2>Q 5

Which is correct reprentation for the given cell reaction:

${Hg}_{2} {Cl}_{2} (s) + Cu (s) \to {Cu}^{2 +} + 2 {Cl}^{-} (ag) + 2 Hg$

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 2>Q 6

The position of some metals in the electrochemical series in decreasing electropositive character is given as

Mg > Al > Zn > Cu > Ag

. What will happen if a copper spoon is used to stir a solution of aluminium nitrate?

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 2>Q 7

Red hot carbon will remove oxygen from the oxide

AO

and

BO

but not from

MO

, while

B

will remove oxygen from

AO

. The activity of metals

A, B

and

M

in decreasing order is

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 2>Q 8

Adding powdered

Pb

and

Fe

to a solution containing

1.0 M

is each of

{Pb}^{2 +}

and

{Fe}^{2 +}

ions would result into the formation of

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 2>Q 9

Consider the cell potentials

{E^{o}}_{{Mg}^{2 +} ∣ Mg} = - 2.37 V

and

{E^{o}}_{{Fe}^{3 +} | Fe} = - 0.04 V .

The best reducing agent would be: