Exam 2 p6 - page 6(c When the solid and dissolved ions in...

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Unformatted text preview: page 6 (c) When the solid and dissolved ions in solution are at equilibrium, what will be the concentrations of thelatter? ” , _ ’ So‘ukmb = K 2 [‘ox‘°-b % hwy/L Ewes PchuCiw‘é' t I 2- 63‘3“? ~45- 1- A; , ~34: - : . m M $ ‘ m y__ Le" 1: LON" “7““! B{:53 "‘ m i 2 07‘ ff 4 ES 1 ‘cxro ( '5 Jr“ (We 8.5,, w .. | \ —; guoKto‘u’M 16. 1 point. Among the following salts, which has the least solubility? (Circle one unless he answer— ch from the information given.) AgI ‘5 C111 9 CaSO4 AM (if: f: i éqlt‘; Ksp1.5><10'16/) 5.0x10‘12 6.1x10'5 l7. 1 point. You have two salt? AgY, with very similar Ksp values. You know that the Ka L value for HY is much greater than e Ka value for HX. Which salt is more soluble in an acidic L (“RM so}:%i)czn?’>((iiiflrtfigle+c>ne))<.Cmp x- {s were. qu (KC 4W1 fr removecp .M eats/(Loom my; a: x: + H 4 P #K _ . . b5 weorwsgmg WV 9 18. 4 pomts. (a) Cafculate the solubility (in mol/L) of Fe(OH)3 (KSp = 4 x 10' ) in a solut10n( buffered at sz5'0' Fe (0‘03 (53 ’2 Fcymg + '5 OH 747,) (DH :§< 0 -=> [06F] : t x (‘0’ L1. (First write the balanced equation for dissolving. Then write the Ksp expression. What does the pH value provide? Based on the balanced equation, which caflculated concentration gives you the solubility? m 3 _ O l Kl '— £1 Calico? ,5 +5 uutfivg -—, kn ea“ c it“ -‘ 9 t r (b) Explain why you would expect the solubility to delc‘i'ease in basic solution. ., [ho-(2050:] 7%: Cefltem‘ff to“ °¥ 20‘ produc'f‘ an HM‘A (use ‘01:!) shits 9051 beta 3 3(- Q‘i—uoirbf‘r‘uw +0 fag ({(v’i‘ / recluvl‘rfj Shiuioill‘f‘y. { 19. 2 points. 3.75 x 10' mol of SOlld Mng is added to a 1.00 L solution which contains a 5.50 x 10‘2 M F' ion. Only a very small amount of the solid dissolves. If x represents the number of xi moles which dissolves, what are the equilibrium concentrations of Mg2+ ions and F ' ions in terms of x ? + . _ 9L Woks M3 F2. (L‘swives QFcc’uLIug 4; Meg M32 (m9 /'1- L and $19ch F_(0~1-)/1L -2. [IAN—fall; he Hfli‘i is preterit, Luff LF‘10': g‘goxpo 24— k go "I'LQ, 5:111 Cumc- 4 F” c (3- x + gJo Klo'L (it) ...
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