if you add K2SO4 to an aqueous solution in which the Ba^2+ and Ca^2+ concentrati

Question

if you add K2SO4 to an aqueous solution in which the Ba^2+ and Ca^2+ concentration are both initially 0.010 M, which ion precipitates first?
What concentration of SO4^2- is required to achieve the most effective separation? if you add K2SO4 to an aqueous solution in which the Ba^2+ and Ca^2+ concentration are both initially 0.010 M, which ion precipitates first?
What concentration of SO4^2- is required to achieve the most effective separation? if you add K2SO4 to an aqueous solution in which the Ba^2+ and Ca^2+ concentration are both initially 0.010 M, which ion precipitates first?
What concentration of SO4^2- is required to achieve the most effective separation?

Explanation / Answer

Ba^+2 ion precipitate first BECAUSE THE Ksp of BaSO4 < CaSO4

Ksp = [Ba^+2][SO4^-2]

1.1*10^-10= [0.010][SO4^-2]

[SO4^-2] = 1.1*10^-10/0.010

              = 1.1*10^-9

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