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the hardness of water is 75 ppm.if d hardness is only due to calcium sulphate,the weight of cal. sulphate in 100 kg of water.

the hardness of water is 75 ppm.if d hardness is only due to calcium sulphate,the weight of cal. sulphate in 100 kg of water.

Grade:12

2 Answers

Sakshi
askIITians Faculty 652 Points
6 years ago
75 ppm CaSO4 means 75g of CaSO4 is present in 106 g of water sample.
One can now use the unitary method to find the answer
Sampath Reddipalli
26 Points
4 months ago
degree of hardness=(w(mg)/M.Wt) * (100/Wt. of water (kg) )
 
75=(w(mg)/120)*100/5 
 
w=450mg=0.45g
 
hope it is usefull to the reader 
 
thank you

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