Answer to Question #279788 in General Chemistry for Sunshine Jimenez

Question

A solution of ethanol is prepared by dissolving 25.0 ml of ethanol in enough water to give a total volume of 250.0 ml. What is the percent-by-volume concentration of ethanol?

Answer 1

percent v/v is (mL ethanol/mL solution)×100.

So you have 25.0 mL ethanol/250 mL

(25/250)×100 = 10% v/v.