CaSO4 has Ksp = 2.4 × 10-5 and SrSO4 has a Ksp of 2.8 × 10-7 . A solution has a concentration of 0.10 M of both Ca2+ and Sr2+ ; then Na2SO4(s) is slowly added. What is the [SO4 2- ] at the point where precipitation starts? Ca(OH)2 has Ksp = 7.9 × 10-6 . What is the pH of a solution made by equilibrating solid Ca(OH)2 with water?
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CaSO4 has Ksp = 2.4 × 10-5 and SrSO4 has a Ksp of 2.8 × 10-7 . A solution has a concentration of 0.10 M of both Ca2+ and Sr2+ ; then Na2SO4(s) is slowly added. What is the [SO4 2- ] at the point where precipitation starts? Ca(OH)2 has Ksp = 7.9 × 10-6 . What is the pH of a solution made by equilibrating solid Ca(OH)2 with water?
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