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Variation of Specific, Equivalent and Molar Conductivities with Concentration

Conductivity ...

Question

Conductivity of solution always decreases with decrease in concentration, both for weak and strong electrolytes.

A

True

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B

False

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Solution

The correct option is A True
the number of ions per unit volume that carry the current in a solution decreases on dilution. The conductivity of a solution at any given concentration is the conductance of one unit volume of solution kept between two platinum electrodes with unit area of cross section and at a distance of unit length.

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Q. Assertion :Conductivity decreases with the decrease in concentration both the weak and strong electrolytes. Reason: No. of ions per unit volume linearly decreases in both electrolytes.

Q. Assertion :Molar conductivity increases with decrease in concentration for weak electrolytes. Reason: No. of ions increases and no. of ions per unit volume decreases due to dilution.

How does molar conductivity of strong and weak electrolytes vary with concentration?

Q. Define limiting molar conductivity. Why conductivity of an electrolyte solution decreases with the decrease in concentration?

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

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Variation of Specific, Equivalent and Molar Conductivities with Concentration

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