Question

A solution has been prepared by mixing 15ml of alcohol with 75 ml of water calculate the percentage (by volume) of alcohol in the solution.

Answer 1

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• Given :

volume of solute (alcohol) = 15ml

volume of solvent (water) = 75ml

volume of solution (15+75) = 100ml

• To Find :

%V/V of alcohol.....??

• Formula :

$\boxed{ \bold{ \rm{ \red{\% \frac{v}{v} = \frac{volume \: of \: solute}{volume \: of \: solution} \times 100}}}}$

• Calculation :

$\rm \: \% \frac{v}{v} = \frac{15}{100} \times 100 \\ \\ \star \: \: \boxed{ \pink{ \rm{\% \frac{v}{v} = 15\%}}} \: \: \star$