What is concentration?

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%

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