The resistivity of a 0 . 8 M solution of an electrolyte is 5 × 10 - 3 ohm - cm . Calculate its molar conductivity.

Given, Concentration ( C ) = 0 . 8 M Resistivity ρ = 5 × 10 - 3 ohm - cm Molar conductivity ( λ m ) = ? As we know, Molar conductivity, λ m = 1000 × k C ⋯ ⋯ ⋯ ⋯ ( i ) also, k = 1 ρ ∴ λ m = 1000 C × ρ ⋯ ⋯ ⋯ ( ii ) Put all the values in equation ii , = 1000 0 . 8 × 5 × 10 - 3 = 2 . 5 × 10 5 ohm - 1 cm 2 mol - 1 Therefore, the molar conductivity of the electrolyte is 2 . 5 × 10 5 ohm - 1 cm 2 mol - 1 .

What is the molar conductivity of 0 · 1 M NaCl if its conductivity is 1 . 06 × 10 - 2 Ω - 1 cm - 1 ?

1 · 06 × 10 2 Ω - 1 cm 2 mol - 1

1 · 06 × 10 - 2 Ω - 1 cm 2 mol - 1

9 · 4 × 10 - 2 Ω - 1 cm 2 mol - 1

5 · 3 × 10 3 Ω - 1 cm 2 mol - 1

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The units of molar conductance are ${ohm}^{- 1} {cm}^{2}$ per .

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Important Questions on Electrochemistry

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Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

KCl

solution of conductivity

0.14 S m^{- 1}

shows a resistance of

4.19 Ω

in a conductivity cell. If the same cell is filled with an

HCl

solution, the resistance drops to

1.03 Ω

. The conductivity of the HCl solution is ____

\times 10^{- 2} S m^{- 1}

. (Round off to the Nearest Integer).

HARD

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

Among the following, the plot that correctly represents the conductometric titration of

0.05 M

H_{2} {SO}_{4}

with

0.1 M {NH}_{4} OH

EASY

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

What are the units of equivalent conductivity of a solution?

HARD

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

Resistance of 0.2 M solution of an electrolyte is

50 Ω

. The specific conductance of the solution is

{1.4 S m}^{-1}

. The resistance of 0.5 M solution of the same electrolyte is

280 Ω

. The molar conductivity of 0.5 M solution of the electrolyte in

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

is :

EASY

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

Addition of excess of ${AgNO}_{3}$ to an aqueous solution of $1$ mole of ${PdCl}_{2} \cdot 4 {NH}_{3}$ gives $2$ moles of $AgCl$ . The conductivity of this solution corresponds to:

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Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

The resistance of a conductivity cell containing

0.01 MKCl

solution at

298 K

1750 Ω

. If the conductivity of

0.01 MKCl

solution at

298 K

0.152 \times 10^{- 3} S {cm}^{- 1}

, then the cell constant of the conductivity cell is____

\times 10^{- 3} {cm}^{- 1}

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Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

At a particular temperature, the ratio of molar conductance to specific conductance of

0.01 M

NaCl

solution is

HARD

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

A $5.0 m mol {dm}^{- 3}$ aqueous solution of $KCl$ has a conductance of $0.55 mS$ when measured in a cell constant $1.3 {cm}^{- 1}$ . The molar conductivity of this solution is _______ ${mSm}^{2} {mol}^{- 1}$ . (Round off to the Nearest Integer)

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Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

Which of the following electrolytic solution has the least specific conductance

EASY

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

The pair of electrolytes that possess same value for the constant

(A)

in the Debye - Huckel - Onsagar equation,

λ_{m} = λ_{m} ° - A \sqrt{C}

HARD

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

The resistance of

0 .01 N

solution of an electrolyte was found to be

220 ohm

298 K

using a conductivity cell with a cell constant of

0.88 cm^{- 1}

. The value of equivalent conductance of solution is-

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?

EASY

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

If the resistivity of

0.1 M KCl

solution is

50 Ω cm .

What is its molar conductivity?

EASY

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

The resistivity of a

0.8 M

solution of an electrolyte is

5 \times 10^{- 3} ohm

cm

. Calculate its molar conductivity.

EASY

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

The molar conductivity at infinite dilution of barium chloride, sulphuric arid and hydrochloric acid are

280, 860

426 {Scm}^{2} {mol}^{- 1}

respectively. The molar conductivity at infinite dilution of barium sulphate is ___

{Scm}^{2} {mol}^{- 1}

( Round off to the Nearest Integer).

HARD

Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

Define the following and write the formula and unit :

Equivalent conductivity

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Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

The resistances of

0.05 M NaOH

solution is

31.6 Ω

and its cell constant is

0.357 {cm}^{- 1}

. Calculate its conductivity and molar conductivity.

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Chemistry>Physical Chemistry>Electrochemistry>Conductance in Electrolytic Solutions

What is the molar conductivity of

0 \cdot 1 M NaCl

if its conductivity is

1.06 \times 10^{- 2} Ω^{- 1} {cm}^{- 1}

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

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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

The units of molar conductance are ohm-1 cm2 per .

Important Questions on Electrochemistry

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The units of molar conductance are ${ohm}^{- 1} {cm}^{2}$ per .