Question

In: Chemistry

1). A solution contains 0.0490 M Ca2+ and 0.0980 M Ag+. If solid Na3PO4 is added...

1). A solution contains 0.0490 M Ca2+ and 0.0980 M Ag+. If solid Na3PO4 is added to this mixture, which of the phosphate species would precipitate out of solution first? (which one?)

(a). Ca3(PO4)2

(b). Ag3PO4

(c). Na3PO4

2). When the second cation just starts to precipitate, what percentage of the first cation remains in solution?

percentage = ?%

Solutions

Expert Solution

3 D solubility Product of caz (Poq) solution is 1.7x1033 And the solubility product of Ag po is sigy 10lt from this Ksp value, it is clear that ca, (poq), will precipitate first. & Answer is caz (PO4)2 2) when all cazt ion will be removed then only 2nd eation ise, Ag & will start precipitate. e ay of first cation (Ca2+) remains in the solution will be 0% 3


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