Question

Calculate the mass of sodium sulphate required to prepare its 25% (mass percent) solution in 100g of water? Your answer​

Answer 1

Explanation:

Let the mass of sodium sulphate required be =xg

The mass of solution =(x+100)g

x g of solute in (x + 100) g of solution

20% =x/x+100*100

20x+2000=100x

80x=2000

x=25gm