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Equivalent, Molar Conductivity and Cell Constant

State True or...

Question

State True or False.
The conductances, equivalent conductivity and molar conductivity increase with dilution.

A

True

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B

False

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Solution

The correct option is A True
With dilution, the total number of ions increase due to increase in the degree of dissociation. Hence, the conductance, the equivalent conductivity and the molar conductivity increases. However the number of ions per unit volume decreases. Hence, the conductivity of the solution decreases. Hence, the given statement is true.

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Similar questions

Q. Consider the following statements.
(i) Molar conductance of

H^{+}

is much higher than those of other ions
(ii) Equivalent conductivity and molar conductivity increase with dilution
(iii) Specific conductivity decreases with dilution
(iv) Conductance

K^{+} < N a^{+} < L i^{+}

in water
Identify the correct statement.

Q. Assertion :Conductivity of weak electrolytic solution decreases with dilution whereas equivalent conductivity, molar conductivity increases with dilution. Reason: On dilution, the ionic mobility and number of ions present in solution increases but the number of ions per mL decreases.

State True or False.

Equivalent conductance at infinite dilution of salt AB is equal to the sum of equivalent conductances of ions, A

^{+}

^{-}

at infinite dilution.

Q. Molar conductivity

(λ_{M})

and equivalent conductivity

(λ_{e q})

for an electrolyte

A_{x} B_{y}

at any dilution are related as:

In infinite dilutions, the molar conductances of Ba²⁺ and Cl^- are 127 and

76 . The equivalent conductivity of at infinite

dilution is

[CBSE 2000]

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