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» <html><body><p></p>Solution :Weight of `CaCl_(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>)` present in 10kg of <a href="https://interviewquestions.tuteehub.com/tag/water-1449333" style="font-weight:bold;" target="_blank" title="Click to know more about WATER">WATER</a> =`<a href="https://interviewquestions.tuteehub.com/tag/10-261113" style="font-weight:bold;" target="_blank" title="Click to know more about 10">10</a>^(3)` moles = <a href="https://interviewquestions.tuteehub.com/tag/111-268410" style="font-weight:bold;" target="_blank" title="Click to know more about 111">111</a>`xx10^(-3)g` <br/> Weight of `CaCl_(2)` present in `10^(6)` of water `=(111xx10^(-3)xx10^(6))/(10(4))=11.1g` <br/> 111g of `CaCl_(2)-=100g ` of `CaCO_(3),11.1g` of `CaCl-=10g` of `CaCO_(3)` <br/> The degree of hardness of given sample=10ppm</body></html>