A percent v/v solution is calculated by the following formula using the milliliter as the base measure of volume (v):
% v/v = mL of solute/100 mL of solution
What is the % v/v of a solution that has 5.0 mL of hydrochloric acid (HCl) diluted to 100 mL with deionized water?
X % = 5.0 mL HCl/100 mL of solution
X/100 = 5.0/100
100X = 500
X = 5.0% % v/v