Question

1. How much water should be added in 25g of salt to obtained 40% salt solution?​

Answer 1

Explanation:

concentration of solution = 40%

mass of solute = 25g

mass of solvent = 40+ X

concentration of solution =( mass of solute / mass of solution) X 100

40 = ( 25 / 40 +X ) X 100

40 + X = ( 25 / 40) X 100

X = 100 - 40

X = 60gm