Chemistry: Matter and Change

Section 3: Using Equilibrium Constants

Self Check Quizzes

1
Which of the solubility product expressions is incorrect?
A)Ksp(Ag2S) = [Ag+]2[S2-]
B)Ksp (Sb2S3) = [Sb2+]3[S3-]2
C)Ksp (CaF2) = [Ca2+][F-]2
D)Ksp(CuS) = [Cu2+][S2-]
2
The value of the Ksp for SrSO4 is 2.8 x 10-7. What is the molar solubility of SrSO4?
A)7.6 x 10-7M
B)5.8 x 10-13M
C)5.3 x 10-4M
D)5.7 x 10-3M
3
The chemical formula for the reaction that forms methane from hydrogen gas and carbon monoxide is given below. Find the concentration of methane produced if [CO] = 0.500 M, [H2] = 0.900 M, and [H2O] = 0.400 M. The Keq for the reaction is 3.933.

CO(g) + 3H2(g) yields CH4(g) +H2O(g)
A)3.58 M
B)44.2 M
C)4.32 M
D)3.98 M
4
Use the table to find Ksp at 298 K, then calculate the molar solubility of AgCl.

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A)4.2 x 10-5 M
B)3.9 x 10-5 M
C)2.6 x 10-5 M
D)1.3 x 10-5 M
5
Find Qsp for AgCl if 50.0 mL of 0.1 M KCl is added to 50 mL of 0.1M AgNO3. Will a precipitate form? Ksp for AgCl is 1.8 x 10-10.

AgCl(s) yields Ag+(aq) + Cl-(aq)
A)0.01, a precipitate will form
B)0.0025, a precipitate will form
C)0.01, a precipitate will not form
D)0.0025, a precipitate will not form.
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