Question

calculate the hardness of water in ppm for mgco3=144
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Answer 1

Answer:

50 ml of given hard water = V2 ml of EDTA. ∴1L (1000ml) of given hard water = mg of CaCO3 eq. Total Hardness of water = 1000 V2/V1 mg/l = 1000 V2/V1 ppm