EASY

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Identify a strong electrolyte in the following compounds.

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Important Questions on Electrochemistry

EASY

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

The decreasing order of electrical conductivity of the following aqueous solutions is:

(A)

0.1 M

Formic acid,

(B)

0.1 M

Acetic acid,

(C)

0.1 M

Benzoic acid.

EASY

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

If the molar conductivities

(in S {cm}^{2} {mol}^{- 1})

NaCl, KCl and NaOH

at infinite dilution are 126 and 150 and 250 respectively, the molar conductivity of

KOH (in S {cm}^{2} {mol}^{- 1})

is -

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

Give a reason for the following.
Conductivity of dilute hydrochloric acid is greater than that of acetic acid.

EASY

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

Amongst the following, the form of water with the lowest ionic conductance at

298 K

is:

HARD

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

\land_{m}^{o}

for

NaCl, HCl

and

NaA

are

126.4, 425.9

and

100 .5 S {cm}^{2} {mol}^{- 1}

respectively. If the conductivity of

0 .001 M HA

5 \times 10^{- 5} S {cm}^{- 1}

, degree of dissociation of

HA

EASY

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

Consider the statements

S 1

and

S 2

S 1

: Conductivity always increases with decreases in the concentration of electrolyte.

S 2

: Molar conductivity always increases with decreases in the concentration of electrolyte.
The correct option among the following

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

The molar conductivities of

HCl, NaCl, {CH}_{3} COOH

and

{CH}_{3} COONa

at infinite dilution follow the order

EASY

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

The variation of molar conductively with concentration of an electrolyte (X) in aqueous solution is shown in the given figure.

Question Image

The electrolyte X is :

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

The molar conductivity of a

0.5 mol {dm}^{- 3}

solution of

A g N O_{3}

with electrolytic conductivity of

5.76 \times 10^{- 3} S c m^{- 1}

298 K

EASY

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

The specific conductance

(K)

0 .02 M

aqueous acetic acid solution at

298 K

1 .65 \times 10^{- 4} S {cm}^{- 1} .

The degree of dissociation of acetic acid is

[Given: equivalent conductance at infinite dilution of

H^{+} = 349 .1 S {cm}^{2} {mol}^{- 1}

and

{CH}_{3} {COO}^{-} = 40 .9 S {cm}^{2} {mol}^{- 1}

]

HARD

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

The equation that is incorrect is:

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

Liquid hydrogen chloride cannot conduct electricity, but molten sodium chloride can conduct electricity- Explain.

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

Which of the following electrolytic solution has the least specific conductance

HARD

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

Which one of the following graphs between molar conductivity

(Λ_{m})

versus

\sqrt{C}

is correct?

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

Let

C_{NaCl}

and

{C_{BaSO}}_{4}

, be the conductances (in S) measured for saturated aqueous solutions of

NaCl

and

B a S O_{4}

respectively, at a temperature T. Which of the following is false?

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

Why can limiting molar conductivity of

{CH}_{3} COOH

not be determined experimentally ?

EASY

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

State Kohlrausch law.

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Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

What is the SI unit of conductivity?

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Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

On what basis electrolytes have been classified as strong and weak electrolytes? Give example of a strong electrolyte.

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Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

The group of compounds which dissociate partially in aqueous solutions is

Identify a strong electrolyte in the following compounds.

Important Questions on Electrochemistry

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