Question

500 ml of a water sample was boiled, cooled and filtered. The filtrate was made up to 500

ml. 100 ml of this sample was titrated against EDTA and the endpoint was obtained at 10

ml of EDTA. 100 ml of a standard hard water (1mg of CaCO3 / ml) required 12 ml of the

same EDTA for titration. Calculate the permanent hardness of the samplel?​

Answer 1

Explanation:

500 ml of a water sample was boiled, cooled and filtered. The filtrate was made up to 500

ml. 100 ml of this sample was titrated against EDTA and the endpoint was obtained at 10

ml of EDTA. 100 ml of a standard hard water (1mg of CaCO3 / ml) required 12 ml of the

same EDTA for titration. Calculate the permanent hardness of the samplel

(≧∇≦)/（⌒▽⌒）（・∀・）(´∀`)

Answer 2

you may go through it it's all fine