We express a solution's volume by volume percent concentration,
% v/v
, by calculating how many milliliters of solute are present in
100 mL
of solution.
In essence, all you have to do to determine a solution's volume by volume percent concentration is figure out how many milliliters of solute you get in
100 mL
of solution, then tag along a
%
sign to that value.
In your case, you know that you get
18.9 mL
of isopropyl alcohol, your solute, in a total volume of
V
total
=
V
solute
+
V
solvent
V
total
=
18.9 mL
+
412 mL
=
430.9 mL
of solution. In order to find the solution's
% v/v
concentration, you must pick pick a
100 mL
of this solution and use its known composition to calculate how many milliliters of isopropyl alcohol it contains
Calculating Percent Volume/Volume (% v/v)
1.).A percent v/v solution is calculated by the following formula using the milliliter as the base measure of volume (v):
