Question

.Calculate the lime and soda required for softening 50000 litre of water containing the following salts: Ca(HCO3)2=16.2mg/l , Mg(HCO3)2 = 14.6mg/l , CaSO4= 13.6mg/l ,MgSO4= 12mg/l, MgCl2= 9.5mg/l, CaCl2= 11.1mg/l

​

Answer 1

Answer:

mole of Ca(HCO3)2=162g/mole162×10−3mg=1×10−3moles

Mole of Ca(SO4)=136g/mole136×10−3g=1×103mole

Total mole of Ca=2×10−3mole

mass of CaCO3=2×10−3×100=0.2g

∴ ppm (permanent hardness) =10006.2×106=200ppm

Mole of MgCl2=9595×10−3=1×10−3mole 

Mole Mg (HCg)2=14673×10−3=5×10−4mole

mole Mg =1.5×

Answer 2

Answer:

Calculate the lime and soda required for softening 50000 litre of water containing the following salts: Ca(HCO3)2=16.2mg/l, Mg(HCO3)2 = 14.6mg/l, CaSO4= 13.6mg/ 1,MgSO4= 12mg/l, MgCl2= 9.5mg/l,

CaCl2 = 11.1mg / l

Your Introduction please...