Q. 185.0( 3 Votes )

What is meant by the concentration of a solution? Explain by giving an example.

Answer :

The concentration of a solution is the amount of solute present in a given amount of solution or solvent. This can be mathematically written as:


The concentration of solution =


Or


The concentration of solution =


Mainly one expresses concentration in 2 ways:


(a) Mass by mass percentage:



(b) Mass by volume percentage:



Eg:


Consider 30g of sugar (solute) dissolved in 150g of water (solvent).


Then the mass of solute = 30g


Mass of solvent = 150g


Mass of solution = Mass of solute + mass of solvent


= 30+150


= 180g


Therefore the concentration of solute expressed using mass by mass percentage is:


Mass by mass percentage of solution = (Mass of solute/Mass of solution) x 100




= 16.6%


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