In: Chemistry
At a temperature other than 25oC, Cd(OH)2 solubility is 5.5 x 10-4 . Calculate it's Ksp at this temperature.
[ACCORDING TO MY TEXT, Ksp of Cd(OH)2 = 2.5 x 1014 @ 25 C]
A.1.7 x 10-10
B.6.7 x 10-10
C.2.5 x 10-14
At a temperature other than 25oC, Cd(OH)2 solubility is 5.5 x 10-4 . Calculate it's Ksp at this temperature.
A.1.7 x 10-10
B.6.7 x 10-10----------------answer
C.2.5 x 10-14
Write Equation: Cd(OH)2(s) ----------àCd2+(aq) + 2 OH-(aq)
Initial Conc. - 0 0
Change - +5.5X 10-4 +2(5.5X 10-4)
Equilibrium - 5.5 X 10-4 11 X 10-4
Ksp = [cd ][OH-]2
Ksp = [5.5 X 10-4][11 X 10-4]2
Ksp = 0.00055 X 0.00000121 =6.655e-10