Question

Q.2 Find various types of hardness in a sample of water with following impurities: Ca(HCO3)2 = 162 ppm, MgCl2 = 95 ppm ,

CaSO4 = 13.6 ppm , NaCl =20.​

Answer 1

Answer:

Calculate the temporary and permanent hardness of water sample having the following the following constituents per litre: Ca(HCO3)2 = 162 mg, MgCl2 =

mole of Ca(HCO3)2 = 162 × 10^-3mg162 g/mole = 1 × 10^-3 moles Mole of Ca(SO4) = 136 × 10^-3g136 g/mole = 1 × 10^3 mole Total mole of Ca = 2 × 10^-3