A solution contains Fe 2 + , Fe 3 + and I - ions. This solution was treated with iodine at 35 ° C . E ° for Fe 3 + | Fe 2 + is + 0 . 77 V and E ° for I 2 | I - = 0 . 536 V The favourable redox reaction is:

There will be no redox reaction

Fe 2 + will be oxidised to Fe 3 +

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Earn 100

Kohlrausch's law states that at :

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Important Questions on Electrochemistry

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 4>Q 31

{Al}_{2} O_{3}

is reduced by electrolysis at low potentials and high currents. If

4.0 \times 10^{4}

amperes of current is passed through molten

{Al}_{2} O_{3}

for

6

hours, what mass of aluminum is produced (Assume

100 %

current efficiency, atomic mass of

Al = 27 g / mol

) ?

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 4>Q 32

The equivalent conductance of

\frac{M}{32}

. Solution of a weak monobasic acid is

8.0 mho {cm}^{2} {eq}^{- 1}

and at infinite dilution is

400 mho {cm}^{2} {eq}^{- 1}

. The dissociation constant of this acid is:

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 4>Q 33

Given,

$(i) {Cu}^{2 +} + 2 e^{-} ⟶ Cu; E ° = 0.337 V$

$(ii) {Cu}^{+ 2} + e^{-} ⟶ {Cu}^{+}; E ° = 0.15 V$

Electro potential, $E °$ for the reaction

${Cu}^{+} + e^{-} ⟶ Cu$ will be:

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 4>Q 34

Which of the following expressions correctly represents the equivalent conductance at infinite dilution of

{Al}_{2} {({SO}_{4})}_{3}

. Given that

Å_{Al 3 +}

and

Å_{{SO}_{4}^{2 -}}

are the equivalent conductances at infinite dilution of the respective ions?

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 4>Q 35

Consider the following relations for emf of an electrochemical cell:
(i) emf of cell = (Oxidation potential of anode) - (Reduction potential of cathode)
(ii) emf of cell = (Oxidation potential of anode) + (Reduction potential of cathode)
(iii) emf of cell = (Reduction potential of anode) + (Reduction potential of cathode)
(iv) emf of cell = (Oxidation potential of anode) - (Oxidation potential of cathode)

Which of the above relations are correct?

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 4>Q 36

An increase in equivalent conductance of a strong electrolyte with dilution is mainly due to :

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 4>Q 37

A solution contains

{Fe}^{2 +}, {Fe}^{3 +}

and

I^{-}

ions. This solution was treated with iodine at

35 ° C

E °

for

{Fe}^{3 +} | {Fe}^{2 +}

+ 0.77 V

and

E °

for

I_{2} | I^{-} = 0.536 V

The favourable redox reaction is:

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Alpha Question Bank for Medical: Chemistry>Chapter 9 - Electrochemistry>Exercise 4>Q 38

Standard electrode potential of three metals

X

Y

and

Z

are

- 1.2 V, + 0.5 V

and

- 3.0 V

respectively. The reducing power of these metals will be :

Kohlrausch's law states that at :

Important Questions on Electrochemistry

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