Question

1. Calculate the solubility product constant, Ksp, for strontium fluoride if 1.2×10-3mol of F-ion is present...

1. Calculate the solubility product constant, Ksp, for strontium fluoride if 1.2×10-3mol of F-ion is present in 2.0 L of a saturated strontium fluoride solution.

A.9.0×10-8

B.2.7×10-11

C.6.9×10-9

D.1.1×10-10

E.1.4×10-6

2. Choose the correct equilibrium constant expression (Ksp) for the dissolution of Ag2S .

(is the answer D?)

A.

[ Ag2S ]
Ksp =
[ Ag+]2 [ S2-]

B. Ksp = [ Ag+][ S2-]2

C.

[ Ag+] [ S2-]
Ka =
[ Ag2S ]

D. Ksp = [ Ag+]2 [ S2-]

E. Ksp = [ Ag+] [ S2-]

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