ooo Verizon LTE 7:23 AM webassign.net (c) pH 11.1 Supporting Materials Periodic

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ooo Verizon LTE 7:23 AM webassign.net (c) pH 11.1 Supporting Materials Periodic Table (a) Will Co (OH)2 precipitate from solution if the pH of a 0.012 M solution of Co(NO3)2 is adjusted to 8.35 (Ksp of Co(OH)2 is 1.3 x 1015) Support your answer by calculating the ion product (Q) of the Co(OH)2 solution. (b) Will AglO3 precipitate when 34 mL of 0.022 M AgNO3 is mixed with 10. mL of 0.014 M NaIO3? (Ksp of AgtO3 is 3.1 108) O Yes Support your answer by calculating the ion product (Q) of the AgIO3 solution. Supporting Materials Periodic Table Constants Constants Home My Assignments Exlension Request

Explanation / Answer

Hi,

I guess you need answer to Ksp of Zn3(PO4)2

Zn3(PO4)2 ===> 3Zn2+ + 2PO4(3-), so [PO4(3-)] = 2 x molar solubility, and [Zn2+] = 3 x molar solubility.

Ksp = [Zn2+]^3[PO4(3-)]^2 = (3x1.5x10^-7)^3(2x1.5x10^-7)^2 = = 8.20 x 10^-26

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