Answer :

gmpratneshm

Answer:

Certainly! Molar conductivity is an important concept in chemistry, especially when studying electrolytic solutions. Let me break it down for you:

Definition:

Molar conductivity (denoted as Λ<sub>m</sub>) is the conductance property of a solution containing one mole of an electrolyte.

It represents the conducting power of all the ions formed by dissolving a mole of electrolyte in a solution.

In simpler terms, it measures how efficiently an electrolyte conducts electricity in a solution.

Formula:

The mathematical expression for molar conductivity is​=CK​

where:

Λ<sub>m</sub> is the molar conductivity.

K represents the specific conductivity.

C is the concentration of the electrolyte in moles per liter.

Unit:

The unit of molar conductivity is S·m<sup>2</sup>·mol<sup>-1</sup> (Siemens per meter squared per mole).

Variation with Concentration:

For both weak and strong electrolytes, molar conductivity increases with dilution (decrease in concentration).

Dilution leads to more dissociation of electrolytes into ions, resulting in increased conductivity.

Strong electrolytes show a gradual increase in molar conductivity with dilution, while weak electrolytes exhibit a sharper increase at lower concentrations.

The specific conductivity, on the other hand, generally decreases with increasing electrolyte concentration due to reduced ion density.

Remember that molar conductivity is not a constant value; it depends on

siddhomail

Answer:

Molar conductivity, also known as molar conductance, is a measure of the ability of a substance to conduct electricity when dissolved in a solvent. In the context of class 12th chemistry, molar conductivity specifically refers to the conductivity of an electrolyte solution containing one mole of electrolyte dissolved in one liter of solution.

Mathematically, molar conductivity (\(\Lambda_m\)) is defined as the conductance (\(G\)) of the solution divided by the concentration of the electrolyte (\(c\)) and the distance between the electrodes (\(L\)):

\[ \Lambda_m = \frac{G}{c \times L} \]

Where:

- \(G\) is the conductance of the solution, measured in Siemens (S).

- \(c\) is the concentration of the electrolyte, typically measured in moles per liter (mol/L) or molarity (M).

- \(L\) is the distance between the electrodes, usually measured in centimeters (cm).

Molar conductivity is expressed in units of Siemens per meter squared per mole (S m² mol⁻¹) or Siemens per centimeter squared per mole (S cm² mol⁻¹). It represents the conductivity of one mole of an electrolyte solution, providing insights into the ability of ions to carry electric current in the solution.

In class 12th chemistry, molar conductivity is often studied in the context of electrolytic solutions, where substances dissociate into ions when dissolved in water. The molar conductivity of an electrolyte solution depends on factors such as the nature of the electrolyte, its concentration, and temperature.

Other Questions