Question

I need help please: Solubility equilibrium

2. Interpret the solubility data given for each of the following compounds at 25°C. Then determine which of the two compounds in each case has a higher Ksp value at 25°C. Afterward, decide whether you could have determined which of the two compounds has a lower Ksp just by comparing the solubilities. Explain why or why not. a. Aluminum phosphate, AIPO4, a compound used in fertilizers, has a solubility of 9.92 x 10-11 M. Barium chromate, BaCro, a compound used to color glass and ceramics, has a solubility of 1.08 10-5 M. (3 points)

Answer 1

& » Alpoq Al3+ + Pog . Ksp = [A13+] [P013] S s . so kip= Lsj [s] Ksp = S2 [given that s=9.92x10W ksp.= (9.92 x 1011) 2 Kep = 9.848 10-21 Ba²+ + 60092- Barroa 80, given that s= 1:08x105m Kap= s2 = (1-088105) ? so Kip of Balrog is greater than Kipa 1.1681010 Ksp of Alpot Because there is no stichiometric coefficient of constitute ion to Ksp depends only Midar solubility of ions. on

BiIz Bi +3I zuse Zn²+ + sez- S 35! (h so Ksp= 6). (313 sos to Ksp = Ksp = 275 t (:s=130x18m) ne Kiras? (25a legy 16 80 Sep (1.981013) 2 KSP= 2701 Ksp = 27x2.858 1020 - Ksp= 3.6 1x1026 Ksp = 7.718 10-19 80 Ksp of Bilz is greater than kse of zuse. Because Nidar solubility is greater to Kep is greater

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