Question

0.28 of CaCO3 was dissolved in HCl and the solution was made to one litre with distilled
water. 1000 ml of the above solution required 28 ml of EDTA solution on titration. 100 ml
of the hard water sample required 33 ml of the same EDTA solution on titration. After
boiling 100 ml of this water, cooling, filtering and then titration required 10 ml of EDTA
solution. Calculate the temporary and permanent hardness of water.

Answer 1

Answer:

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