Question

Calculate the degree of total hardness, permanent hardness and temporary hardness, if 50 ml of a water sample consumed 18 ml of 0.01m edta before boiling and 7 ml of the same edta after boiling.

Answer 1

Temporary hardness is mostly destroyed by mere boiling of water i.e., when .... 50 ml of given hard water = V2 ml of EDTA. = ... Solution: 50ml of water sample = 15ml of 0.01 M EDTA.