Further explanation
The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight/volume,), molarity, molality, parts per million (ppm), or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.
There are several concentration units in percentages that can be used:
Percent Volume (% V / V), total volume (ml) of solute in 100 ml of solution.
[tex]\tt \%volume=\dfrac{volume~solute}{volume~solution}\times 100\%[/tex]
Given
10 ml ethanol
50 ml solution
Required
The percent by volume
Solution
the percent volume :
= (solute volume : solution volume) x 100%
= (10 ml : 50 ml) x 100%
= 20%
Learn more
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