Vinegar is a solution of acetic acid in water. If a 145 mL bottle of distilled vinegar contains 27.2 mL of acetic acid, what is the volume percent (v/v) of the solution?

Answer 1

We see that vinegar is simply acetic acid dissolved in water. If we have 27.2mL of acetic acid and a total solution of 145mL then our volume percent is simply the ratio of volume acetic acid over volume of total solution x 100%

27.2mL / 145mL x 100% = 18.76%