Question

How much water should be mixed with 18cm3 of alcohol so as to obtain 18% v/v solution?.
Please justify the answer.​

Answer 1

So, this way the volume of solute would be (100-12) ml, i.e. 88 ml. So, 88 ml of water is required to mix with 12 ml of alcohol to get the solution to the level of 12 percent alcohol. ⏺️There is 12% of alcohol solution, this means that mixture contains the volume of 12%.