Question

: 100 ml of a sample of water required 15 ml of 0.01 M EDTA for
titration using Eriochrome Black-T as indicator. In other
experiment, 100 ml of the same sample was boiled to remove the
temporary hardness, the precipitate was removed and the cold
solution required 8 ml of 0.01 M EDTA using Eriochrome black
T as an indicator. Calculate the total hardness, permanent
hardness and temporary hardness in mg/litre of CaCO3
equivalent

Answer 1

Answer:

70 mg/ lit plz make me as brainlist