Chemistry Multiple Type Questions
Unit 18 B Study Guide
1. Find the solubility (in mol/L) of lead(II) chloride (PbCl2) at 25oC. Ksp = 1.62e–5.
A) 1.59e–2
B) 2.53e–2
C) 6.64e–17
D) 2.01e–3
E) 2.01e–2
2. The two salts AgX and AgY have very similar solubilities in water. It is known that the salt AgX is much more soluble in acid than is AgY. What can be said about the relative strengths of the acids HX and HY?
A) Nothing.
B) HY is stronger than HX.
C) HX is stronger than HY.
D) The acids have equal strengths.
E) Cannot be determined.
3. Solubility Products (Ksp)
BaSO4 1.5 ´ 10-9
CoS 5.0 ´ 10-22
PbSO4 1.3 ´ 10-8
AgBr 5.0 ´ 10-13
Which of the following compounds is the most soluble (in miles/liter)?
A) BaSO4
B) CoS
C) PbSO4
D) AgBr
E) BaCO3
4. How many moles of Fe(OH)2 [Ksp = 1.8 10-15] will dissolve in 1.0 liter of water buffered at pH = 11.52?
A) 1.6e–10
B) 3.3e–3
C) 1.1e–5
D) 6.1e9
E) 5.4e–13
5. You have two salts, AgX and AgY, with very similar Ksp values. You know that Ka for HX is much greater than Ka for HY. Which salt is more soluble in acidic solution?
A) AgX
B) AgY
C) They are equally soluble in acidic solution.
D) Cannot be determined by the information given.
E) None of these (a-d).
6. You have a solution consisting of 0.10 M Cl– and 0.10 M CrO42–. You add 0.10 M silver nitrate dropwise to this solution. Given that the Ksp for Ag2CrO4 is 9.0 × 10–12, and that for AgCl is 1.6 × 10–10, which of the following will precipitate first?
A) silver chloride
B) silver chromate
C) silver nitrate
D) cannot be determined by the information given
E) none of these
7. Which of the following compounds has the lowest solubility in mol/L in water?
A) Al(OH)3 Ksp = 2 × 10–32
B) CdS Ksp = 1.0 × 10–28
C) PbSO4 Ksp = 1.3 × 10–8
D) Sn(OH)2 Ksp = 3 × 10–27
E) MgC2O4 Ksp = 8.6 × 10–5
8. The solubility of CaSO4 in pure water at 0oC is 1.38 gram(s) per liter. The value of the solubility product is
A) 1.01e–2
B) 1.38e–3
C) 1.01e–1
1. Find the solubility (in mol/L) of lead(II) chloride (PbCl2) at 25oC. Ksp = 1.62e–5.
A) 1.59e–2
B) 2.53e–2
C) 6.64e–17
D) 2.01e–3
E) 2.01e–2
2. The two salts AgX and AgY have very similar solubilities in water. It is known that the salt AgX is much more soluble in acid than is AgY. What can be said about the relative strengths of the acids HX and HY?
A) Nothing.
B) HY is stronger than HX.
C) HX is stronger than HY.
D) The acids have equal strengths.
E) Cannot be determined.
3. Solubility Products (Ksp)
BaSO4 1.5 ´ 10-9
CoS 5.0 ´ 10-22
PbSO4 1.3 ´ 10-8
AgBr 5.0 ´ 10-13
Which of the following compounds is the most soluble (in miles/liter)?
A) BaSO4
B) CoS
C) PbSO4
D) AgBr
E) BaCO3
4. How many moles of Fe(OH)2 [Ksp = 1.8 10-15] will dissolve in 1.0 liter of water buffered at pH = 11.52?
A) 1.6e–10
B) 3.3e–3
C) 1.1e–5
D) 6.1e9
E) 5.4e–13
5. You have two salts, AgX and AgY, with very similar Ksp values. You know that Ka for HX is much greater than Ka for HY. Which salt is more soluble in acidic solution?
A) AgX
B) AgY
C) They are equally soluble in acidic solution.
D) Cannot be determined by the information given.
E) None of these (a-d).
6. You have a solution consisting of 0.10 M Cl– and 0.10 M CrO42–. You add 0.10 M silver nitrate dropwise to this solution. Given that the Ksp for Ag2CrO4 is 9.0 × 10–12, and that for AgCl is 1.6 × 10–10, which of the following will precipitate first?
A) silver chloride
B) silver chromate
C) silver nitrate
D) cannot be determined by the information given
E) none of these
7. Which of the following compounds has the lowest solubility in mol/L in water?
A) Al(OH)3 Ksp = 2 × 10–32
B) CdS Ksp = 1.0 × 10–28
C) PbSO4 Ksp = 1.3 × 10–8
D) Sn(OH)2 Ksp = 3 × 10–27
E) MgC2O4 Ksp = 8.6 × 10–5
8. The solubility of CaSO4 in pure water at 0oC is 1.38 gram(s) per liter. The value of the solubility product is
A) 1.01e–2
B) 1.38e–3
C) 1.01e–1