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16 Cards in this Set

  • Front
  • Back

What is the equilibrium constant expression for dissolving iron (III) hydroxide in water?

Ksp = [Fe+3] [OH-]3

The LEAST soluble sulfide is

CuS; Ksp = 1.0 x 10-36

A flask contains the following chemical system at equilibrium:CuCO3(s) Cu2+(aq) + 2 CO32–(aq)Addition of which of the following substances will increase the solubility of CuCO3(s) in water?(1) aqueous hydrochloric acid(2) aqueous sodium carbonate(3) solid copper(II) carbonate

(1) only

The solubility of lead(II) iodide (FW=461.0 g/mol) is 0.064 g/100 mL at 20°C. What is the solubility product for lead(II) iodide?

1.1 x 10-8

The molar solubility of magnesium carbonate Mg(CO3) is 1.8 x 10-4 mol/L. What is the Ksp for this compound?

3.2 x 10-8

Calculate the silver ion concentration in a saturated solution of silver(I) carbonate (Ksp = 8.1 x 10-12).

2.5 x 10-4 M

The Ksp of BaSO4 is 1.1 x 10–10 at 25 °C. What mass of BaSO4 (molar mass = 233.4 g/mol) will dissolve in 1.0 L of water at 25°C?

2.4 x 10-3 g

What is the molar solubility of Mn(OH)2(s) in a solution that is buffered at pH 8.00 at 25°C? The Ksp of Mn(OH)2 is 1.9 x 10–13 at 25°C.

1.9 x 10–1 mol/L

At what pH will an aqueous solution of 0.200 M Ni2+ begin to precipitate as Ni(OH)2 at 25°C? The Ksp of Ni(OH)2 is 5.5 x 10–16 at 25°C.


What mass of KCl (molar mass = 74.55 g/mol) must be added to 1.0 L of 0.0180 M Pb2+(aq) to initiate precipitation of PbCl2(s)? The Ksp of PbCl2 is 1.7 x 10–5. Assume no volume change occurs upon addition of KCl.

2.3 g

The following anions can be separated by precipitation as silver salts: Cl–, Br–, I–, CrO42–. If Ag+ is added to a solution containing the four anions, each at a concentration of 0.10 M, in what order will they precipitate? Compound Ksp AgCl 1.8 x 10–10 Ag2CrO4 1.1 x 10–12 AgBr 5.4 x 10–13 AgI 8.5 x 10–17

AgI à AgBr à AgCl à Ag2CrO4

The molar solubility of silver sulfate Ag2(SO4) is 1.5 x 10-2 mol/L. What is the Ksp for this compound?

1.4 x 10-5

Calculate the concentration of fluoride ions in a saturated barium fluoride (Ksp = 1.7 x 10-6) solution.

1.5 x 10-2 M

The Ksp for silver(I) phosphate is 1.8 x 10-18. Calculate the molar solubility of silver(I) phosphate.

1.6 x 10-5 M

What is the molar solubility of Fe(OH)3(s) in a solution that is buffered at pH 2.50 at 25oC? The Ksp of Fe(OH)3 is 6.3 x 10–38 at 25°C.

2.0 x 10–3 mol/L

Will a precipitate form when 50.0 mL of 1.2 x 10-3 M Pb(NO3)2 are added to 50.0 mL of 2.0 x 10-4 M Na2S? If so, identify the precipitate.

Yes, the precipitate is PbS.