The equivalent conductance of `NaCI` at concentration C and at infinited dilution are ` lambda_c ` and `lambda_(infinity)` is given as.

Options

A. ` lambda_c = lambda_("infty") + (B) C`
B. ` lambda_c lambda_("infty") - (B) C`
C. `lambda_c = lambda_("infty") - (B) sqrt C`
D. ` lambda_c = lambda_("infty") + (B) sqrt C`

Answer

C

Explanation

Debye-Huckel Onsager equation can be written as
`lambda_c = lambda_(infty) - (B) sqrt C`
Where
`lambda_c =` Molar conductivity of the solution at certain concentration
` lambda_(infty) =` Limiting molar conductivity
C=Concentration
B=Constant that depends on temperature, charges on the ions and dielectric constatnas well as viscosity of the solution.