Which of the following expression correctly represents the molar conductivity of `BaCl_(2)` at infinite dilution given that `lamda^(@) Ba^(2+) and lamda^(@) Cl^(-)` are the molar conductivity at infinite dilution of respective ions?

Options

A. `2 lamda^(@) Ba^(2+) +lamda^(@) Cl^(-)`
B. `lamda^(@)Ba^(2+) + 2lamda^(@)Cl^(-)`
C. `(lamda^(@) Ba^(2+) + lamda^(@)) xx Cl^(-)`
D. `(1)/(2) lamda^(@) Ba^(2+)+ (1)/(2) 2lamda^(@) Cl^(-)`

Answer

B

Explanation

The limiting molar conductivity of an electrolyte is the sum of the limiting ionic conductivities of the cation and the naion each multiplied with the number of ions present in one formula unit of electrolyte.