Discussion
Match the quantity with how it behaves on dilution.
1. Specific conductance 2. Equivalent conductance 3. Degree of dissociation
P. Increases Q. Decreases R. Increases toward unity
Answer: C
Correct answer: 1-Q, 2-P, 3-R
The three behave differently on dilution because they are normalised differently. Specific conductance, being per unit volume, falls as the ions are spread through more solvent. Equivalent conductance, referring to a fixed quantity of solute, rises as dissociation increases and interionic attraction weakens. And the degree of dissociation itself rises towards unity, complete dissociation being the limit at infinite dilution.
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