Question
Based on a Ksp experiment, describe a way to soften water by removing calcium ions. What would be the advantages and disadvantages of your method?
Answers
DrBob222
This question is really for you to use your imagination and your knowledge of chemistry. I can give you a hint: Ca^2+ can be pptd by using H2SO4, for example, since CaSO4 is moderately insoluble. BUT, would you want to drink water that had been treated with an excess of H2SO4? I would rather drink the extra calcium ions, I think.