A solution is prepared by dissolving 1.6 g of SrCrO4 in 100. mL of hot water. SrCrO4 dissolves according to the equation
SrCrO4 -> Sr 2+ + CrO4 2-
Should a precipitate form if the solution is cooled to 25 C? Assume that a negligible change in volume occurs during the process. (Ksp=3.6 x 10^-5)
2007-03-07 17:13:37 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
1.6 g SrCrO4 in 100 ml of water equates to 0.0786 M
Given SrCrO4 -> Sr 2+ + CrO4 2-
If SrCrO4 has solubility of s mol/l then it generate s mol/l of Sr2+ and CrO42-
Ksp = s^2 = 3.6 x 10^-5 yielding s = 0.006 mol/l
Given the solubility is much greater than the solubility at 25oC, SrCrO4 should precipitate from solution.
2007-03-07 19:16:09 · answer #1 · answered by Anonymous · 0⤊ 0⤋
I wish I were an English teacher so I could flunk anyone who uses more than one exclamation point or question mark. And do your own math homework!
2007-03-07 17:21:17 · answer #2 · answered by Kacky 7 · 0⤊ 1⤋