Calculate the amount of lime and soda required for softening 50,000 litres of hard water containing: MgCO₃ = 144 ppm, CaCO₃ = 25 ppm, MgCl₂ = 95ppm, CaCl₂ = 111ppm, Fe₂O₃ = 25ppm and Na₂SO₄ = 15ppm
[Given: At. Wt of Mg= 24, C=12, O=16, Ca=40, Cl=35.5, Fe= 55.85, Na= 23, S= 32]