Question

Question 7 (10 points) Which has the greater molar solubility, s, magnesium fluoride (Ksp = 5.2 x 10-11) or silver chloride (Ksp = 1.8 x 10-10)? Support your work with calculations - no supporting work = no credit.

Answer 1

i Mg fa Ma ha will dimo ughe in water a S 23 Mg Fa - Malagt af can) equilibrium & solubility product of the goth be Ksp = 8. Mg?!] [F]? Ksp = S(25)? ksp=s. 452 4s = k sp substituting the value of ksp 453 5.2 x 10-11 $3= 13x10-11 S = 2:35x1024 M u solubility of Mg 2+ = 2,35x10 4M (11) For Agu I Agu - Agt te equilibrium S 3 u kopa [Agt] [w]

18x1076 = SS i su 1.6 x 15 10 [S= 1348105 It is clear that solubility cone of Mg h is higher than Age u Mgra has greater molar solubility that Aga. mo Alternative Molar solubility of Mg F2=2.35x10 -4 moll Molar maot of mg F2 = 62.30 g mol-1 solubility in g/l = 2.35X104 not x 62.30 I = 146.105 91L = 1.464 x 10 g/L 10000 Molar solubility of Agu= 1.34x10-5 motlltr. Molar mann of Ag U = 143.32g IL : solubility in g/l = 1.34410-5x 143.39 = 1.92X10 311 i solubility of Mg For in higher than Agel.