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Variation of Specific, Equivalent and Molar Conductivities with Concentration

Molar conduct...

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Molar conductivity of a weak electrolyte AB at 0.01 M concentration was found to be 10 S cm2 mol–1. What will be the molar conductivity of this electrolyte when concentration is 0.005 M? The molar conductivity at infinite dilution is 400 S cm2 mol–1. Assume the degree of dissociation is negligible as compared to unity

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Q. Assertion :Molar conductivity of a weak electrolyte at infinite dilution cannot be determined experimentally. Reason: Kohlrausch's law helps to find the molar conductivity of a weak electrolyte at infinite dilution.

Q. Assertion :Kohlrausch law helps to find the molar conductivity of weak electrolyte at infinite dilution. Reason: Molar conductivity of a weak electrolyte at infinite dilution cannot be determined experimentally.

Q. The molar conductance of

N H_{4} O H

at 0.01M concentration is 11.3

o h m^{- 1} c m^{2} m o l^{- 1}

. The degree of dissociation
of

N H_{4} O H

is
(molar conductance at infinite dilution is 271.1)

Q. The molar conductance of

N H_{4} O H

at 0.01M concentration is 11.3

o h m^{- 1} c m^{2} m o l^{- 1}

. The degree of dissociation
of

N H_{4} O H

is
(molar conductance at infinite dilution is 271.1)

25^{\circ} C

molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is

9.54 o h m^{- 1} c m^{2} m o l^{- 1}

and at infinite dilution its molar conductance is

238 o h m^{- 1} c m^{2} m o l^{- 1}

. The degree of ionisation of ammonium hydroxide at the same concentration and temperature is

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Variation of Specific, Equivalent and Molar Conductivities with Concentration

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