How do you calculate molarity of a solution?
Molarity is a measure of the concentration of a solute in a given quantity of solution. It is calculated in terms of amount of substance present in a given volume of liquid. Here is the brief tutorial on how to calculate molarity of a substance in a given quantity of solution using the below simple steps.
Molarity (M) = Moles of Solute / Litres of Solution
Step 1: Considering an example
What is the molarity of 1.35 moles of sugar in 2.5 litres of water?
Assign values as per the above given example.
Moles of Solute = 1.35
Litres of Solution = 2.5
Step 2: Calculating the Molarity by substituting the values
Molarity (M) = 1.35 / 2.5
= 0.54 Moles / Litre
Hence, the Molarity of 1.35 moles of sugar in 2.5 litres of water is 0.54 moles / litre.