(a) Define molar conductivity of a solution and explain how molar conductivity changes with change in concentration of solution for a weak and a strong electrolyte.
(b) The resistance of conductivity cell containing `0.001 M KCl` solution at `298 K` is `1500 omega`.
What is the cell constant if the conductivity of `0.001 MKCl` solution at `298 K` is `0.146 xx 10^(-3) S cm^(-1)`

Explanation

Conductivity, `kappa = 0.146 xx 10^(-3) S cm^(-1)`
Resistance , R = 1500 ohm
Cell constant = `("Conductivity" , (kappa))/("Conductivity" (G))` = Conductivity `(kappa) xx` Resistance (R)
`therefore` Cell constant = `0.146 xx 10^(-3) ohm^(-1) cm^(-1) xx 1500 `ohm
`=0.219 cm^(-1)`