Question 1

A _____ is an ion formed from a metal ion with a Lewis base attached to it by a coordinate covalent bond.

Accepted Answer

A) naive ion​ 
B) radical ion​ 
C) simple ion​ 
D) monatomic ion​ 
E) ​complex ion 
A) naive ion​ 
B) radical ion​ 
C) simple ion​ 
D) monatomic ion​ 
E) ​complex ion

Question 2

What is the molar solubility of zinc hydroxide at pH 12.34? For Zn(OH)2,Ksp = 2.1 × 10-16; for Zn(OH)42-,Kf = 2.8 × 1015.

Accepted Answer

A) 1.2 × 10-25 M 
B) 1.3 × 10-2 M 
C) 2.8 × 10-4 M 
D) 3.7 × 10-6 M 
E) 1.4 × 10-8 M 
A) 1.2 × 10-25 M 
B) 1.3 × 10-2 M 
C) 2.8 × 10-4 M 
D) 3.7 × 10-6 M 
E) 1.4 × 10-8 M

Question 3

The following reaction represents a step in the separation of which analytical group of cations?
Hg22+(aq)+ 2Cl-(aq)→ Hg2Cl2(s)

Accepted Answer

A) Analytical Group II 
B) Analytical Group I 
C) Analytical Group V 
D) Analytical Group IV 
E) Analytical Group III 
A) Analytical Group II 
B) Analytical Group I 
C) Analytical Group V 
D) Analytical Group IV 
E) Analytical Group III

Question 4

What is the solubility product expression for Pb(IO3)4?

Accepted Answer

A) Ksp = [Pb4+][4IO3-]4 
B) Ksp = [Pb4+][IO3-] 
C) Ksp = [Pb][IO3]4 
D) Ksp = [Pb4+][IO3-]4 
A) Ksp = [Pb4+][4IO3-]4 
B) Ksp = [Pb4+][IO3-] 
C) Ksp = [Pb][IO3]4 
D) Ksp = [Pb4+][IO3-]4

Question 5

Figures I-IV represent ionic compounds formed upon the mixing of an aqueous solution containing cation C with an aqueous solution containing anion A.Identify the figure(s)that represent(s)products for which Ksp = 4s3,where s is the molar solubility of the ionic compound.

Accepted Answer

A) both I and II 
B) only II 
C) only IV 
D) only I 
E) only III 
A) both I and II 
B) only II 
C) only IV 
D) only I 
E) only III

Question 6

If 370 mL of 1 × 10-8 M Al(NO3)3 is mixed with 370 mL of 1 × 10-8 M NaOH,what will occur? For Al(OH)3,Ksp = 4.6 × 10-33.

Accepted Answer

A) Aluminum hydroxide will precipitate. 
B) Sodium hydroxide will precipitate. 
C) Aluminum nitrate will precipitate. 
D) Sodium nitrate will precipitate. 
E) No precipitate will form. 
A) Aluminum hydroxide will precipitate. 
B) Sodium hydroxide will precipitate. 
C) Aluminum nitrate will precipitate. 
D) Sodium nitrate will precipitate. 
E) No precipitate will form.

Question 7

The hydroxide ion concentration of a saturated solution of Cu(OH)2 is   M.What is the solubility product constant for Cu(OH)2?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 8

The concentration of barium carbonate in a saturated aqueous solution of the salt at 25°C is   M.What is the Ksp of this sparingly soluble salt?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 9

Suppose hydrogen sulfide is added to a solution that is 0.0010 M in Fe2+,Cd2+,Co2+,and Mn2+ such that the concentration of H2S is 0.10 M.When the pH of the solution is adjusted to 3,a precipitate forms.What is the composition of the precipitate?
H2S(aq)+ 2H2O(l)  
2H3O+(aq)+ S2-(aq); Kc = 1.1 × 10-20
Salt
Ksp
FeS
6)0 × 10-18
CdS
8)0 × 10-27
CoS
4)0 × 10-21
MnS
2)5 × 10-10

Accepted Answer

A) CdS only 
B) CdS,CoS,FeS,and MnS 
C) CdS,CoS,and FeS 
D) CdS and FeS 
E) CdS and CoS 
A) CdS only 
B) CdS,CoS,FeS,and MnS 
C) CdS,CoS,and FeS 
D) CdS and FeS 
E) CdS and CoS

Question 10

What is the concentration of silver(I)ion in a saturated solution of silver(I)carbonate containing 0.0046 M Na2CO3? For Ag2CO3,Ksp = 8.6 × 10-12.

Accepted Answer

A) 6.0 × 10-4 M 
B) 2.0 × 10-9 M 
C) 8.0 × 10-9 M 
D) 4.3 × 10-5 M 
E) 8.0 × 10-4 M 
A) 6.0 × 10-4 M 
B) 2.0 × 10-9 M 
C) 8.0 × 10-9 M 
D) 4.3 × 10-5 M 
E) 8.0 × 10-4 M

Question 11

What is the solubility product expression for mercury(I)chloride,Hg2Cl2?

Accepted Answer

A) Ksp = [Hg22+][2Cl-]2 
B) Ksp = [Hg22+][Cl-]2 
C) Ksp = [Hg22+][2Cl- ] 
D) Ksp = [Hg2][Cl2] 
E) Ksp = [Hg+]2[Cl-]2 
A) Ksp = [Hg22+][2Cl-]2 
B) Ksp = [Hg22+][Cl-]2 
C) Ksp = [Hg22+][2Cl- ] 
D) Ksp = [Hg2][Cl2] 
E) Ksp = [Hg+]2[Cl-]2

Question 12

Given the two equilibria below,
Ag(NH3)2+(aq)  Ag+(aq)+ 2NH3(aq); Kd = 5.9 × 10-8AgI(s)  
Ag+(aq)+ I−(aq); Ksp =  
What is Kc for the following equilibrium?AgI(s)+ 2NH3(aq)  
Ag(NH3)2+(aq)+ I-(aq)

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 13

Silver nitrate (AgNO3)is slowly added to a solution containing 0.100 M Br− and 0.050 M FeCN64− until a precipitate just forms.What is the molar concentration of Ag+ just as the precipitate forms? AgBr Ksp = 5.0 × 10-13 and Ag4FeCN6 Ksp = 8.5 × 10-45.

Accepted Answer

A) 2.0 × 10-11 M Ag+ 
B) 5.0 × 10-12 M Ag+ 
C) 1.0 × 10-11 M Ag+ 
D) 3.3 × 10-12 M Ag+ 
E) 1.7 × 10-43 M Ag+ 
A) 2.0 × 10-11 M Ag+ 
B) 5.0 × 10-12 M Ag+ 
C) 1.0 × 10-11 M Ag+ 
D) 3.3 × 10-12 M Ag+ 
E) 1.7 × 10-43 M Ag+

Question 14

Suppose hydrogen sulfide is added to a solution that is 0.10 M in Cu2+,Pb2+,and Ni2+ such that the concentration of H2S is 0.10 M.When the pH of the solution is adjusted to 1.00,a precipitate forms.What is the composition of the precipitate?
H2S(aq)+ 2H2O(l)  
2H3O+(aq)+ S2-(aq); Kc = 1.1 × 10-20
Salt
Ksp
CuS
6)0 × 10-36
PbS
2)5 × 10-27
NiS
3)0 × 10-19

Accepted Answer

A) CuS only 
B) PbS and NiS 
C) CuS and PbS 
D) NiS only 
E) CuS,PbS,and NiS 
A) CuS only 
B) PbS and NiS 
C) CuS and PbS 
D) NiS only 
E) CuS,PbS,and NiS

Question 15

In which of these solutions would silver(I)carbonate have the lowest molar solubility? For silver(I)carbonate,Ksp = 8.5 × 10-12.

Accepted Answer

A) 0.03 M H2CO3 
B) 0.1 M AgNO3 
C) 0.01 M AgNO3 
D) 0.1 M Na2CO3 
E) pure water 
A) 0.03 M H2CO3 
B) 0.1 M AgNO3 
C) 0.01 M AgNO3 
D) 0.1 M Na2CO3 
E) pure water

Question 16

Solid KCN is added to a solution composed of 0.10 M Ag+ and 0.10 M Zn2+ just until a precipitate forms.What is the composition of this initial precipitate? AgCN Ksp = 2.2 × 10-16 and Zn(CN)2 Ksp = 3 × 10-16.

Accepted Answer

A) The precipitate is pure AgCN(s). 
B) The precipitateis pure Zn(CN)2(s). 
C) The precipitate is a mixture of AgCN(s)and Zn(CN)2(s). 
D) The precipitate is a mixture of KCN(s)and AgCN(s). 
E) The precipitate is a mixture of KCN(s)and Zn(CN)2(s). 
A) The precipitate is pure AgCN(s). 
B) The precipitateis pure Zn(CN)2(s). 
C) The precipitate is a mixture of AgCN(s)and Zn(CN)2(s). 
D) The precipitate is a mixture of KCN(s)and AgCN(s). 
E) The precipitate is a mixture of KCN(s)and Zn(CN)2(s).

Question 17

After mixing an excess PbCl2 with a fixed amount of water,it is found that the equilibrium concentration of Pb2+ is 1.6 × 10-2 M.What is Ksp for PbCl2?

Accepted Answer

A) 4.0 × 10-6 
B) 1.6 × 10-5 
C) 2.5 × 10-4 
D) 4.8 × 10-2 
E) 1.0 × 10-6 
A) 4.0 × 10-6 
B) 1.6 × 10-5 
C) 2.5 × 10-4 
D) 4.8 × 10-2 
E) 1.0 × 10-6

Question 18

What is the solubility product expression for Al(OH)3?

Accepted Answer

A) Ksp = [Al3+][3OH-] 
B) Ksp = 3[Al3+][OH-]3 
C) Ksp = [Al3+][OH-]3 
D) Ksp = [Al3+][3OH-]3 
E) Ksp = [Al3+][OH-] 
A) Ksp = [Al3+][3OH-] 
B) Ksp = 3[Al3+][OH-]3 
C) Ksp = [Al3+][OH-]3 
D) Ksp = [Al3+][3OH-]3 
E) Ksp = [Al3+][OH-]

Question 19

What is the molar solubility of lead(II)sulfate at 25°C? The solubility product constant for lead(II)sulfate is 1.7 × 10-8 at 25°C.

Accepted Answer

A) 1.7 × 10-8 M 
B) 5.7 × 10-3 M 
C) 8.5 × 10-9 M 
D) 1.6 × 10-3 M 
E) 1.3 × 10-4 M 
A) 1.7 × 10-8 M 
B) 5.7 × 10-3 M 
C) 8.5 × 10-9 M 
D) 1.6 × 10-3 M 
E) 1.3 × 10-4 M

Question 20

Which of the following is not likely to form a complex ion with Al3+?

Accepted Answer

A) NH4+ 
B) NH3 
C) OH− 
D) H2O 
E) CH3NH2 
A) NH4+ 
B) NH3 
C) OH− 
D) H2O 
E) CH3NH2

Exam 17: Solubility and Complex-Ion Equilibria

A _____ is an ion formed from a metal ion with a Lewis base attached to it by a coordinate covalent bond.

What is the molar solubility of zinc hydroxide at pH 12.34? For Zn(OH)2,Ksp = 2.1 × 10-16; for Zn(OH)42-,Kf = 2.8 × 1015.

The following reaction represents a step in the separation of which analytical group of cations? Hg22+(aq)+ 2Cl-(aq)→ Hg2Cl2(s)

What is the solubility product expression for Pb(IO3)4?

Figures I-IV represent ionic compounds formed upon the mixing of an aqueous solution containing cation C with an aqueous solution containing anion A.Identify the figure(s)that represent(s)products for which Ksp = 4s3,where s is the molar solubility of the ionic compound.

If 370 mL of 1 × 10-8 M Al(NO3)3 is mixed with 370 mL of 1 × 10-8 M NaOH,what will occur? For Al(OH)3,Ksp = 4.6 × 10-33.

The hydroxide ion concentration of a saturated solution of Cu(OH)2 is M.What is the solubility product constant for Cu(OH)2?

The concentration of barium carbonate in a saturated aqueous solution of the salt at 25°C is M.What is the Ksp of this sparingly soluble salt?

What is the concentration of silver(I)ion in a saturated solution of silver(I)carbonate containing 0.0046 M Na2CO3? For Ag2CO3,Ksp = 8.6 × 10-12.

What is the solubility product expression for mercury(I)chloride,Hg2Cl2?

Given the two equilibria below, Ag(NH3)2+(aq) Ag+(aq)+ 2NH3(aq); Kd = 5.9 × 10-8AgI(s) Ag+(aq)+ I−(aq); Ksp = What is Kc for the following equilibrium?AgI(s)+ 2NH3(aq) Ag(NH3)2+(aq)+ I-(aq)

Silver nitrate (AgNO3)is slowly added to a solution containing 0.100 M Br− and 0.050 M FeCN64− until a precipitate just forms.What is the molar concentration of Ag+ just as the precipitate forms? AgBr Ksp = 5.0 × 10-13 and Ag4FeCN6 Ksp = 8.5 × 10-45.

In which of these solutions would silver(I)carbonate have the lowest molar solubility? For silver(I)carbonate,Ksp = 8.5 × 10-12.

Solid KCN is added to a solution composed of 0.10 M Ag+ and 0.10 M Zn2+ just until a precipitate forms.What is the composition of this initial precipitate? AgCN Ksp = 2.2 × 10-16 and Zn(CN)2 Ksp = 3 × 10-16.

After mixing an excess PbCl2 with a fixed amount of water,it is found that the equilibrium concentration of Pb2+ is 1.6 × 10-2 M.What is Ksp for PbCl2?

What is the solubility product expression for Al(OH)3?

What is the molar solubility of lead(II)sulfate at 25°C? The solubility product constant for lead(II)sulfate is 1.7 × 10-8 at 25°C.

Which of the following is not likely to form a complex ion with Al3+?

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Quantum Theory of the Atom

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Filters

What is the molar solubility of zinc hydroxide at pH 12.34? For Zn(OH)₂,K_sp = 2.1 × 10^-16; for Zn(OH)₄^2-,K_f = 2.8 × 10¹⁵.

The following reaction represents a step in the separation of which analytical group of cations? Hg₂²⁺(aq)+ 2Cl^-(aq)→ Hg₂Cl₂(s)

What is the solubility product expression for Pb(IO₃)₄?

Figures I-IV represent ionic compounds formed upon the mixing of an aqueous solution containing cation C with an aqueous solution containing anion A.Identify the figure(s)that represent(s)products for which K_sp = 4s³,where s is the molar solubility of the ionic compound.

If 370 mL of 1 × 10^-8 M Al(NO₃)₃ is mixed with 370 mL of 1 × 10^-8 M NaOH,what will occur? For Al(OH)₃,K_sp = 4.6 × 10^-33.

The hydroxide ion concentration of a saturated solution of Cu(OH)₂ is M.What is the solubility product constant for Cu(OH)₂?

The concentration of barium carbonate in a saturated aqueous solution of the salt at 25°C is M.What is the K_sp of this sparingly soluble salt?

What is the concentration of silver(I)ion in a saturated solution of silver(I)carbonate containing 0.0046 M Na₂CO₃? For Ag₂CO₃,K_sp = 8.6 × 10^-12.

What is the solubility product expression for mercury(I)chloride,Hg₂Cl₂?

Given the two equilibria below, Ag(NH₃)₂⁺(aq) Ag⁺(aq)+ 2NH₃(aq); K_d = 5.9 × 10^-8AgI(s) Ag⁺(aq)+ I−(aq); K_sp = What is K_c for the following equilibrium?AgI(s)+ 2NH₃(aq) Ag(NH₃)₂⁺(aq)+ I^-(aq)

Silver nitrate (AgNO₃)is slowly added to a solution containing 0.100 M Br− and 0.050 M FeCN₆⁴⁻ until a precipitate just forms.What is the molar concentration of Ag⁺ just as the precipitate forms? AgBr K_sp = 5.0 × 10^-13 and Ag₄FeCN₆ K_sp = 8.5 × 10^-45.

In which of these solutions would silver(I)carbonate have the lowest molar solubility? For silver(I)carbonate,K_sp = 8.5 × 10^-12.

Solid KCN is added to a solution composed of 0.10 M Ag⁺ and 0.10 M Zn²⁺ just until a precipitate forms.What is the composition of this initial precipitate? AgCN K_sp = 2.2 × 10^-16 and Zn(CN)₂ K_sp = 3 × 10^-16.

After mixing an excess PbCl₂ with a fixed amount of water,it is found that the equilibrium concentration of Pb²⁺ is 1.6 × 10^-2 M.What is K_sp for PbCl₂?

What is the solubility product expression for Al(OH)₃?

What is the molar solubility of lead(II)sulfate at 25°C? The solubility product constant for lead(II)sulfate is 1.7 × 10^-8 at 25°C.

Which of the following is not likely to form a complex ion with Al³⁺?