Which of the following solubility product expressions is incorrect?

1
Which of the following solubility product
expressions is incorrect?

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2
Calculate the solubility product constant for
lead fluoride, PbF2. Its molar solubility is 2.1
x 10-3 mole per liter at 25C.

1. 4.4 x 10-6
2. 4.2 x 10-7
3. 9.3 x 10-7
4. 9.3 x 10-9
5. 3.7 x 10-8

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3
The solubility of bismuth sulfide is 1.8 x 10-5
g/100. mL of water at 18C. Calculate the Kspfor
Bi2S3 at 18C.

1. 6.0 x 10-36
2. 3.4 x 10-23
3. 5.7 x 10-31
4. 5.8 x 10-12
5. 3.2 x 10-8

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4
Calculate the molar solubility of aluminum
hydroxide at 25C. Its Kspis 1.9 x 10-33.

1. 1.2 x 10-9 M
2. 4.2 x 10-15 M
3. 2.9 x 10-9 M
4. 4.4 x 10-14 M
5. 9.3 x 10-9 M

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5
How many grams of AgCl will dissolve in 1.0 L of
0.25 M KCl? Ksp (AgCl) 1.8 x 10-10

1. 1.0 x 10-7
2. 2.6 x 10-8
3. 6.4 x 10-9
4. 7.8 x 10-8
5. 2.5 x 10-9

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6
If NaCl is added to a 0.010 M solution of AgNO3in
water at 25C, at what Cl- does precipitation
of AgCl begin? Ksp for AgCl 1.8 x 10-10.

1. 1.0 x 10-10 M
2. 1.3 x 10-6 M
3. 1.8 x 10-8 M
4. 1.8 x 10-12 M
5. 1.3 x 10-10 M

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7
Calculate the concentration of sulfate ion in a
saturated solution of barium sulfate to which
barium chloride has been added until Ba2 0.1
M at 25C. Ksp for BaSO4 1 x 10-10.

1. 1 x 10-5 M
2. 1 x 10-8 M
3. 1 x 10-9 M
4. 1 x 10-7 M
5. 1 x 10-6 M

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8
What is the minimum concentration of bromide ion
required to limit the concentration of silver ion
in solution to a maximum of 1.0 x 10-9 M? Ksp for
AgBr is 3.3 x 10-13.

1. 1.0 x 10-9 M
2. 3.3 x 10-4 M
3. 1.1 x 10-7 M
4. 5.0 x 10-6 M
5. 3.3 x 10-22 M

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9
Which of the following salts would not be
expected to be more soluble in acidic solution
than in pure water?

1. Fe(OH)3
2. FeS
3. ZnCO3
4. AgI
5. Hg2(CH3COO)2

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10
Consider the following system Some solid AgCl is
in contact with its saturated aqueous solution.
Gaseous NH3is then bubbled through the solution
slowly with swirling until all the AgCl
dissolves. Choose the response which includes all
the true statements, and no others. I. At the
point at which all the AgCl has dissolved Ag
Cl-. II. The AgCl dissolves due to formation
of the complex ion, Ag(NH3)2. III. As the NH3
is added to the solution, the Cl- increases.
IV. The solution remains saturated with silver
chloride as long as any solid AgCl remains. V.
The solubility of silver chloride in aqueous
ammonia solution is greater than in pure water.

1. I, II, and IV
2. II, III, and IV
3. I, IV, and V
4. II and V
5. II, III, IV, and V

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11
Calculate the concentration of free Ni2 in 1.0 M
Ni(NH3)6(NO3)2 at 25C. Kd for Ni(NH3)62 is
1.8 x 10-9.

1. 1.6 x 10-5 M
2. 0.012 M
3. 3.2 x 10-4 M
4. 0.084 M
5. 4.4 x 10-5 M

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