Question

A chemistry student needs 10.00 g of isopropenylbenzene for an experiment. He has available 120. g of a 42.7% w/w solution of isopropenylbenzene in carbon tetrachloride.

Calculate the mass of solution the student should use.

Answer 1

The mass of solution the student should use is 23.4 g.

Step-by-step explanation:

Hi there!

The concentration of the solution, 42.7% w/w, indicates that there is 42.7 g of isopropenylbenzene (IPB) per 100 g of solution. Then, if the student needs 10.00 g IPB, the mass of solution the student should take will be:

10.00 g IPB · (100 g solution/42.7 g IPB) = 23.4 g solution.

Then, the mass of solution the student should use is 23.4 g.