Question

vinegar is 5.0% acetic acid, CH3COOH, by mass. vinegar has a density of 1.02 g/ml what is the madd of acetic acid in 50.0 ml of vinegar?

Answer 1

5.00% acetic acid by mass means 5.00 g acetic acid/100 g solution.
The 100 g soln can be converted to mL by using the density.
mass = volume x density and
v= m/d = 100/1.02 = 98.04 mL.
5 g x (50 mL/98.04 mL) = g acetic acid in 50 mL.

Answer 2

2.55