The correct order of equivalent conductance at infinite dilution of $LiCl, NaCl $ and $KCl $ is
- LiCl > NaCl > KCl
- KCl > NaCl > LiCl
- NaCl > KCl > LiCl
- LiCl > KCl > NaCl
The Correct Option is B
Solution and Explanation
Cations have same charge but different size. Smaller cations are more heavily hydrated in aqueous solution giving larger hydrated radius and thus smaller ionic speeds and equivalent conductance.
$\Rightarrow \, \, \, $ Equivalent conductance : KCl > NaCl > LiCl
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Concepts Used:
Conductance
What is conductance?
Conductance is an expression of the ease with which electric current flows through materials like metals and nonmetals. In equations, an uppercase letter G symbolizes conductance. The standard unit of conductance is siemens (S), formerly known as mho.
What is conductance in electricity?
Conductance in electricity is considered the opposite of resistance (R). Resistance is essentially the amount of friction a component presents to the flow of current.
The conductivity of electrolytic solutions is governed by the following factors:
- Interionic attraction
- Solvation of ions
- The viscosity of the solvent
- Temperature