Question

18.0 g of Al2(SO4)3 is dissolved in 85.0 g of water. What is % concentration ofthe solution? Round answer to 1 place past decimal

Answer 1

Percent concentration of Al2(SO4)3

1) Set the equation

`\text{Percent by mass = }\frac{\text{mass of solute}}{\text{mass of solution}}\cdot100=`

2) Replace known values.

`\text{Percent concentration of Al}_2(SO_4)_3=(18.0gofAl_2(SO_4)_3)/(85.0gofH_2O)\cdot100\text{ =}21.2percentofAl_2(SO_4)_3`

The percent concentration of Al2(SO4)3 is 21.2% Al2(SO4)3.