Question

) 0.30 g of CaCO3 was dissolved in HCl and the solution made on to one litre with distilled water. 100 ml of this solution required 30 ml of EDTA solution on titration. 100 ml of hard water sample required 55 ml of 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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