- Units & Notation
- Moles per litre
- Grams per litre
- Percent solutions
- Parts per million
- Practice problems
Percent solutions
Activity
Calculate the quantities of acetone and water required to make 2L of a 70% solution.
Try to attempt this problem yourself. Type-in your answer (digits only) in the text box given below and then check your answer by clicking the 'Check Answer' button.
Volume of solution is 2 litres. % concentration (v/v) is 70. Placing these values in the formula for % concentration (v/v)
we get:
From the above equation, the volume of acetone is 1.4 litres which is equal to 1400 millilitres.
As the total solution was 2 litres, the volume of water is total solution - volume of acetone i.e. 2 - 1.4 = 0.6 litres or 600 millilitres.
You can go to another section of this resource if you have got the answer right, or else, the video below shows a detailed step by step approach to solve the above problem.
This video contains sound.
