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Kohlrausch Law

At infinite d...

Question

At infinite dilution, each ion of an electrolyte contributes a characteristic ionic conductance towards equivalent conductance of electrolyte which is independent of the nature of other ion present in solution. This statement was given by:

A

Kohlrausch

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B

Debye-Huckel

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C

Arrhenius

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D

Ostwald

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Solution

The correct option is A Kohlrausch
At infinite dilution, each ion of an electrolyte contributes a characteristic ionic conductance towards equivalent conductance of electrolyte which is independent of the nature of other ion present in solution. This statement was given by Kohlrausch and is known as Kohlrausch law of independent migration of ions.

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Q. Read the following statement and predict the corresponding law.

'At infinite dilution when dissociation is complete, each ion makes a definite contribution towards total equivalent conductance of the electrolyte irrespective of the nature of the ion'.

Q. Read the following statetnent and predict the corresponding law? 'At infinite dilution when dissociation is complete, each ion makes a definite contribution towards total equivalent conductance of the electrolyte irrespective of the nature of the ion.

Assertion: At infinite dilution, both strong and weak electrolyte have degree of ionization equal to unity.

Reason: At infinite dilution of an electrolyte, the equivalent conductance of cations and anions are independent of each other.

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.

Q. The ionization constant of a weak electrolyte is

25 \times 10^{- 6}

while the equivalent conductance of its

0.01 M

19.6 S c m^{2} e q^{- 1}

. The equivalent conductance of the electrolyte at infinite dilution (in

S c m^{2} e q^{- 1}

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