Drug “X” solution is prepared by dissolving 750 g of Drug “X” in sufficient volume of solvent

Drug “X” solution is prepared by dissolving 750 g of Drug “X” in sufficient volume of solvent
5 (100%) 7 votes

Q:

Drug “X” solution is prepared by dissolving 750 g of Drug “X” in sufficient volume of solvent to make 1000 mL of solution. If the specific gravity of this solution is 1.5, how many milliliters of solvent are used?

A: 

D = 1.5 g/mL

Mass = d x Volume = 1.5 g/mL x 1000 mL = 1500 g of solution

MassX + MassSolvent = 1500 g

MassSolvent = 1500 – MassX = 1500 -750 = 750 g.

VolumeSolvent = MassSolvent/d = 750 / 1 = 750 mL (we assume solvent has a density of 1).