What is concentration?
It is the amount(mass/volume) of a solute in a given amount(mass/volume) of a solution.
It can be expressed in many ways.
Mass by mass percentage = (Mass of solute/ Mass of solution)x100
Question: If 49 grams of Sulphuric acid are dissolved in 100 grams of a solutions, calculate the concentration of this solution?
Thus using the above formula,
Mass by mass percentage = (49 g/100g)x100
= 49%
Mass by volume percentage =(Mass of solute/ Volume of solution)x100
Question: If 50 grams of glucose are dissolved in 100 ml solution, calculate the concentration of the solution.
Thus Mass by volume percentage =(50g/ 100)x100
=50%
Volume by volume percentage =(Volume of solute/ Volume of solution)x100
If 20 ml of pure HCl acid are dissolved in 50 ml solution, calculate the concentration of the solution.
Thus Volume by volume percentage =(20 ml/ 50ml)x100
= 40%
