Question

Calculate the mass of potassium sulphate required to prepare its 10 present solution in 1oo gm of water

Answer 1

by using formula mass of solute/mass of solution into 100

let solute be x

10%s = x/x +10 X 100

10% X 100= x/x+10

10 X ( x + 10) = x

10x + 100 = x

10x - x = 100

9x = 100

x = 100/9

x = 11.1

Hope this helps! Cheers!!

Answer 2

A 10% mass solution in 100g of water means x/(100 + x) = 1/10 where x = mass required.
100 + x = 10x
100 = 9x
x = 100/9 = 11.11g of potassium sulphate are required