Molarity

It may be defined as the number of moles of the solute present in one liter of solution. So,

If 1 mol of the solute is present in 1 L of the solution, we say that the solution is one molar or concentration of the solution is 1 M i.e. molarity of solution is 1.

Representation of Molarity

In chemical reactions the Molarity of a reactant or a product is represented by putting its symbol or formula within a square bracket, [ ]. For example, in reaction

The molar concentration of reactants nitrogen and hydrogen can be represented as [H₂] and [N₂] respectively while molar concentration of product ammonia can be represented as [NH₃]

Test your understanding and answer these questions:

1. Define molarity?