Question

A solution of methanol in water is 20 % by volume. If the solution and pure methanol have densities of \( 0.964\text{ kg L}^{-1} \) and \( 0.793\text{ kg L}^{-1} \), respectively, find the per cent of methanol by weight?

• A. 15.8
• B. 16.45
• C. 20
• D. 14.8
• E. 17.6

Hint:

To convert volume % to weight %, you must use the specific densities of both the solute and the entire solution to find their respective masses.

Answer 1

The Correct Option is B