Asolution of iron (iii) chloride is made to be 1.541 m, and 1.457 m in water. calculate the density of the solution and percent by mass iron (iii) chloride.

Given that the molality of the Iron(III) chloride solution = 1.541 mol /kg water

1.541 mol is present per L solution

Calculating mass of from 1.541 mol:

Mass of solvent = 1 kg

Total mass of the solution = 1000 g + 249.95 g = 1249.95 g solution

Density of the solution =  

Molarity of the solution = 1.457 mol/L solution

Calculating mass of   from 1.457 mol:

Volume of the solution = 1 L *

Mass of solution =

Mass percentage of in the solution =

Therefore density of the solution is 1.25 g/mL

Mass percent of the solution is 18.9 %

a is the correct answer