Mole

Mole

1. Definition

   • amount of substance
   • contains same no. of particles
   • where C-12 has a mass of exactly 12

2. Avogadro's constant

   • Approx. 6.02 x 10 to the power 23 particles in one mole of a substance
   • no. is called Avogadro's constant
   • 1 mole of a substance consists of 6.02 x 10 to the power 23 particles.

3. Relationship between mole and no. of particles

   • No. of moles x Avogadro's constant= no. of particles

4. Definition in terms of Mr

   • Relative molecular mass/Relative formula mass represented in grams= 1 mole of a substance
   • No. of particles in 1 mole of a substance = Avogadro's constant