Question

Define volume percent of a solution.

Answer 1

1. Volume percent of a solution: The concentration of a solution by volume percent may be defined as the number of parts by volume of solute per $100$part by volume of solution.
2. $\%StrengthbyVolume=\frac{Volumeofsolute}{Volumeofsolution}\times 100$
3. For example, $20\%$ alcohol solution by volume is prepared by diluting $20.0\mathrm{mL}$of alcohol to a volume of $80.0\mathrm{mL}$ water.

Step-1: $Volumeofsolution=Volumeofsolute+Volumeofsolvent$

$=20mL+80mL=100mL$

Step-2: Substituting the values in the percent strength by volume formula, we get,

$ConcentrationofSolution(byVolume)=\frac{20mL}{100mL}\times 100=20\%$

Thus, the concentration of alcohol solution is $20\%$ by volume.