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Question
In the plot of molar conductivity (∧m) vs square root of concentration (c1/2) following curves are obtained for two electrolytes A and B : 
Answer the following:
(i) predict the nature of electrolytes A and B.
(ii) What happens on the extrapolation of ∧m to concentration approaching for electrolytes A and B?
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Solution
Electrolyte A is strong electrolyte & Electrolyte B is weak electrolyte On extrapolation of Λm to concentration approaching zero for strong electrolytes, we get the value of Λ=m i.e. molar conductance at infinite dilution In the case of weak electrolytes, Λm increases steeply on dilution. Therefore, Λ=m cannot be obtained by extrapolation.
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