Question

give the unit of specific conductance and molar conductance

Answer 1

Answer: Units of specific conductance is $Scm^{-1}$

and molar conductance is $Scm^2mol^{-1}$

Explanation:

Specific conductance is the conductance for unit volume of a solution.

$\kappa=C\times \frac{l}{a}$

where,

$\kappa$ =Specific conductance

C = Conductance

$\frac{l}{a}$= cell constant where l = length and a = area

$\kappa=\frac{ohm^{-1}\times cm}{cm^2}=ohm^{-1}cm^{-1}=Scm^{-1}$

Molar conductance is defined as the conductance of all the ions produced by ionization of 1 g mole of an electrolyte when present in V mL of solution.

$\mu=\frac{\kappa\times 1000}{C}$

where,  

$\mu$= molar conductance

$\kappa$ =Specific conductance

c = concentration of the solution in mole per litre

$\mu=\frac{Scm^{-1}}{molcm^{-3}}=Scm^2mol^{-1}$