A sample of hard water contains 1 xx 10^(-3) mole of CaCl_2per 10kg of water. Calculate the degree of hardness of water sample

A sample of hard water contains 1 xx 10^(-3) mole of CaCl_2per 10kg of

1.	A sample of hard water contains 1 xx 10^(-3) mole of CaCl_2per 10kg of water. Calculate the degree of hardness of water sample
Answer» Solution :Weight of `CaCl_(2)` present in 10kg of WATER =`10^(3)` moles = 111`xx10^(-3)g` Weight of `CaCl_(2)` present in `10^(6)` of water `=(111xx10^(-3)xx10^(6))/(10(4))=11.1g` 111g of `CaCl_(2)-=100g ` of `CaCO_(3),11.1g` of `CaCl-=10g` of `CaCO_(3)` The degree of hardness of given sample=10ppm