Question

For a weak electrolyte , molar conductance in dilute solution increases sharply as its concentration in solution is decreased . Give reason

Answer 1

Answer:

This is due to ostwalds law of dilution which state that degree of dissociation of a weak electrolyte is inversely linked with root of it's concentration.

Answer 2

When we increase the solvent into the solution then dissociation of ions will be more. As a result, concentration of ions will be more thus, there will be increase in molar conductance.

Explanation:

A weak electrolyte is defined as a solution in which solute particles partially dissociate.

Relation between molar conductance and concentration is as follows.

        $\Lambda_{m} = \frac{\kappa \times 1000}{C}$

Where,    C = concentration

       $\lambda_{m}$ = molar conductance

Hence, when we increase the solvent into the solution then dissociation of ions will be more. As a result, concentration of ions will be more thus, there will be increase in molar conductance.  

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