Molarity is a concentration unit that describes how much of a substance is dissolved in a solution. Units that are commonly used for molarity is moles per litre abbreviated as mol/L.

**Formulas to calculate for molarity:**

**Example:**

What is the molarity of a solution containing 0.25 moles of NaOH in 2.5 litres.

Therefore,the molarity of the solution is 0.1 mol/L.