Question

What is graham's law ?

Answer 1

In1829, Thomas Graham, a Scottish Chemist formulated the Graham’s Law of the Diffusion and Effusion of Gases. According to this Law, the rate of Diffusion of different gases, at a constant temperature, is inversely proportional to the square root of its density.

Formula for Graham’s Law of Diffusion and Effusion

r ∝ 1/(M)½

where,

r = rate of diffusion or effusion
M = molar mass

The Molar Mass tells you the number of grams per mole of a compound. The units for molar mass is grams/mole. It indicates the number of atoms, ions, molecules, or formula units present in a particular chemical.