Question

A standard hard water contains 1 gm of CacO3 per liter. 50 ml of this required 50 ml of EDTA solution, 50 ml of sample water required 40 ml of EDTA solution. The sample after boiling required 20 ml EDTA solution. Calculate the temporary and permanent hardness of the given sample of water, in different units.
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Answer 1

Explanation:

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Answer 2

Answer:

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