Chem 102 - General Chemistry » Winter 2022 » Quiz 4

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Question #1
The solubility of manganese (II) hydroxide (Mn(OH)2) is 2.2x10-5M  What is the Ksp of Mn(OH)2?
A.   4.8 × 10-10
B.   4.3 × 10-14
C.   2.1 × 10-14
D.   2.2 × 10-5
E.   1.1 × 10-14
Question #2
A solution containing Ba(NO3)2 is mixed with a solution of LiF to form a solution that is 0.0070 M in barium ion and 0.0120 M in fluoride ion. What will happen once these solutions are mixed forming the concentrations given above? Ksp(BaF2) = 1.7 × 10-6.
A.   Nothing will precipitate since Qsp < Ksp 
B.   Nothing will happen since both barium nitrate and lithium fluoride are soluble compounds
C.   Nothing will happen since Barium fluoride is extremely soluble.
D.   There is not enough information
E.   A precipitate will form since Qsp > Ksp for BaF2
Question #3
What is the solubility (in M) of PbCl2 in a solution of HCl with a pH of 0.82? The Ksp of PbCl2 is 1.6x10-5.
A.   1.6 × 10-5
B.   2.0 × 10-3
C.   7.1 × 10-4
D.   1.1 × 10-4
E.   1.8 × 10-4
F.   None of the above
Question #4
In which of the following aqueous solutions would you expect CuBr to have the highest solubility?
A.   0.010 M NaCl
B.   0.040 M CuNO3
C.   0.020 M LiBr
D.   0.0100 M KBr
E.   0.030 M NaBr

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