Question

A solution contains 50 ml alcohol dissolved in 150 ml of water . Calculate the concentration of the solution?

Answer 1

Vsolute = 50ml
Vsolvent = 150ml
Vsolution = Solvent + Solute 
            = 50 + 150 = 200
conc.% = (Volume of solute/Volume of solution)100
             = (50/200)100
     = 25%
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Answer 2

Concentration of solution -Mass of solute is divided by volume of solution×100
= 50/150×100
=100/3
=33.3%