A sample of hard water contains 0.005 mole of CaCl_2per litre. What is – InterviewSolution

1.	A sample of hard water contains 0.005 mole of CaCl_2per litre. What is the minimum concentration of Na_2SO_4which must be exceeded for removing the calcium ions from the water sample? Ksp (CaSO_4) = 2.4 xx 10^(-5)at 25^@C .
Answer» SOLUTION :0.0048 mole/L

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