What is molar conductivity and what is molar condu

Question

What is molar conductivity and what is molar conductance ? What is the difference between both terms,?

Arun · Accepted Answer

The resistance of any conductor varies directly as its length (l) and inversely as its cross-sectional area (A), i.eMathematically

$R\ \alpha \ l$

$R\ \alpha \ \frac{1}{A}$

$\Rightarrow R = \rho \frac{l}{A}$

Where ? is called the specific resistance.

l/A is known as cell constant.

If l = 1 cm and A = 1 cm2, then

R = ?

The specific resistance is, thus defined as the resistance of one centimeter cube of a conductor.

The reciprocal of specific resistance is termed the specific conductance or it is the conductance of one centimeter cube of a conductor.

It is denoted by the symbo $\kappa$ (kappa)l .

Thus,

$\kappa =\frac{1}{\rho }$

Where $\kappa =$ kappa ? the specific conductance

Specific conductance is also called conductivity.

Further,

$\rho =\frac{A\times R}{l}$

$\Rightarrow \frac{1}{\rho } =\frac{l}{A}\times \frac{1}{R}$

$\Rightarrow \kappa = \frac{l}{A}\times C$

or Specific conductance = Conductance × cell constant

In the case of electrolytic solutions, the specific conductance is defined as the conductance of a solution of definite dilution enclosed in a cell having two electrodes of unit area separated by one centimeter apart.

Unit of specific conductance:

Inorganic Chemistry> What is molar conductivity and what is mo...

What is molar conductivity and what is molar conductance ? What is the difference between both terms,?

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What is molar conductivity and what is molar conductance ? What is the difference between both terms,?

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