Question

hard water sample contains 0.0012% of mgso4 and 0.0011% of cacl2 calculate hardness of water as well as moles of na2co3 required to remove hardness of water

Answer 1

Answer:

One litre of a sample of hard water contain 1 mg of CaCI2 and 1 mg of MgCI2. Find the total hardness in terms of parts of CaCO3 per 106 parts of water by weight.