Question 1

Which of the following is a weak acid in aqueous solution?

Accepted Answer

A) HClO4 
B) HCl 
C) H2SO4 
D) HNO3 
E) H2SO3 
A) HClO4 
B) HCl 
C) H2SO4 
D) HNO3 
E) H2SO3

Question 2

Which anion will form a precipitate with Ca2+?

Accepted Answer

A) Cl- 
B) OH- 
C) C2H3O2- 
D) Br- 
E) none of the above 
A) Cl- 
B) OH- 
C) C2H3O2- 
D) Br- 
E) none of the above

Question 3

Which of the following conversions is not an oxidation-reduction reaction?

Accepted Answer

A) conversion of Mn2O3 to MnO2 
B) conversion of K to KCl 
C) conversion of NaBr to Br2 
D) conversion of CaCO3 to CaO 
E) conversion of VO2+ to VO2+ 
A) conversion of Mn2O3 to MnO2 
B) conversion of K to KCl 
C) conversion of NaBr to Br2 
D) conversion of CaCO3 to CaO 
E) conversion of VO2+ to VO2+

Question 4

What minimum mass of iron (II)nitrate must be added to 10.0 of a 0.0699 M phosphate solution in order to completely precipitate all of the phosphate as solid iron (II)phosphate?
2PO43-(aq)+ 3Fe(NO3)2(aq)→ Fe3(PO4)2(s)+ 6NO3-(aq)

Accepted Answer

A) 0.125 g 
B) 0.377 g 
C) 0.0838 g 
D) 0.0419 g 
E) 0.188 g 
A) 0.125 g 
B) 0.377 g 
C) 0.0838 g 
D) 0.0419 g 
E) 0.188 g

Question 5

Which of the following aqueous solutions would be expected to be the best conductor of an electric current at room temperature?

Accepted Answer

A) 0.10 M CH3COOH 
B) 0.10 M HCl 
C) 0.10 M Na2SO4 
D) 0.10 M NaCl 
E) 0.10 M H3PO4 
A) 0.10 M CH3COOH 
B) 0.10 M HCl 
C) 0.10 M Na2SO4 
D) 0.10 M NaCl 
E) 0.10 M H3PO4

Question 6

All the following are oxidation-reduction reactions except

Accepted Answer

A) H2(g)+ F2(g)→ 2HF(g). 
B) Ca(s)+ H2(g)→ CaH2(s). 
C) 2K(s)+ 2H2O(l)→ 2KOH(aq)+ H2(g). 
D) 6Li(s)+ N2(g)→ 2Li3N(s). 
E) Mg3N2(s)+ 6H2O(l)→ 3Mg(OH)2(s)+ 2NH3(g). 
A) H2(g)+ F2(g)→ 2HF(g). 
B) Ca(s)+ H2(g)→ CaH2(s). 
C) 2K(s)+ 2H2O(l)→ 2KOH(aq)+ H2(g). 
D) 6Li(s)+ N2(g)→ 2Li3N(s). 
E) Mg3N2(s)+ 6H2O(l)→ 3Mg(OH)2(s)+ 2NH3(g).

Question 7

In a volumetric analysis experiment,a solution of sodium oxalate (Na2C2O4)in acidic solution is titrated with a solution of potassium permanganate (KMnO4)according to the following balanced chemical equation:
2KMnO4(aq)+ 8H2SO4(aq)+ 5Na2C2O4(aq)→ 2MnSO4(aq)+ 8H2O(l)+ 10CO2(g)+ 5Na2SO4(aq)+ K2SO4(aq)
What volume of 0.0262 M KMnO4 is required to titrate 0.170 g of Na2C2O4 dissolved in 45.0 mL of solution?

Accepted Answer

A) 2.59 mL 
B) 6.48 mL 
C) 19.3 mL 
D) 48.4 mL 
E) 45 mL 
A) 2.59 mL 
B) 6.48 mL 
C) 19.3 mL 
D) 48.4 mL 
E) 45 mL

Question 8

All of the following reactions are described as decomposition reactions except

Accepted Answer

A) CuSO4 • 5H2O(s)   CuSO4(s)+ 5H2O(g). 
B) 2PbO2(s)   2PbO(s)+ O2(g). 
C) Fe(CO)5(l)   Fe(s)+ 5CO(g). 
D) H2SO3(aq)   SO2(g)+ H2O(l). 
E) NO2(g)+ H2O(l)   NO(g)+ 2HNO3(aq). 
A) CuSO4 • 5H2O(s)   CuSO4(s)+ 5H2O(g). 
B) 2PbO2(s)   2PbO(s)+ O2(g). 
C) Fe(CO)5(l)   Fe(s)+ 5CO(g). 
D) H2SO3(aq)   SO2(g)+ H2O(l). 
E) NO2(g)+ H2O(l)   NO(g)+ 2HNO3(aq).

Question 9

Identify the spectator ion(s)in the following reaction.
Cu(OH)2(s)+ 2H+(aq)+ 2Cl-(aq)→ Cu2+(aq)+ 2Cl-(aq)+ 2H2O(l)

Accepted Answer

A) Cu2+ and Cl- 
B) Cu2+ 
C) Cu(OH)2 
D) Cl- 
E) H+ and Cl- 
A) Cu2+ and Cl- 
B) Cu2+ 
C) Cu(OH)2 
D) Cl- 
E) H+ and Cl-

Question 10

A precipitate will form when a freshly prepared aqueous carbonic acid solution is added to an aqueous solution of

Accepted Answer

A) potassium carbonate. 
B) ammonium chloride. 
C) nitrous acid. 
D) calcium hydroxide. 
E) sodium chloride. 
A) potassium carbonate. 
B) ammonium chloride. 
C) nitrous acid. 
D) calcium hydroxide. 
E) sodium chloride.

Question 11

In order to determine the amount of chloride ion in a solution by using gravimetric analysis,which of the following should you add to the solution?

Accepted Answer

A) NaNO3(aq) 
B) Al(NO3)3(aq) 
C) NaCl(aq) 
D) AgNO3(aq) 
E) Mg(NO3)2(aq) 
A) NaNO3(aq) 
B) Al(NO3)3(aq) 
C) NaCl(aq) 
D) AgNO3(aq) 
E) Mg(NO3)2(aq)

Question 12

All the following are strong acids in aqueous solution except

Accepted Answer

A) HCl. 
B) HF. 
C) HI. 
D) HBr. 
E) H2SO4. 
A) HCl. 
B) HF. 
C) HI. 
D) HBr. 
E) H2SO4.

Question 13

What is the oxidation number of Ba in BaFeO4?

Accepted Answer

A) 6 
B) -2 
C) 2 
D) +3 
E) 0 
A) 6 
B) -2 
C) 2 
D) +3 
E) 0

Question 14

Which net ionic equation best represents the reaction that occurs when an aqueous solution of barium chloride is mixed with an aqueous solution of lithium sulfate?

Accepted Answer

A) 2H+(aq)+ 2Cl-(aq)→ 2HCl(g) 
B) Ba2+(aq)+ SO42-(aq)→ BaSO4(s) 
C) Ba2+(aq)+ 2Cl-(aq)+ 2Li+(aq)+ SO42-(aq)→ BaSO4(s)+ 2LiCl(aq) 
D) BaCl2(aq)+ Li2SO4(aq)→ BaSO4(s)+ 2LiCl(aq) 
E) No net reaction occurs. 
A) 2H+(aq)+ 2Cl-(aq)→ 2HCl(g) 
B) Ba2+(aq)+ SO42-(aq)→ BaSO4(s) 
C) Ba2+(aq)+ 2Cl-(aq)+ 2Li+(aq)+ SO42-(aq)→ BaSO4(s)+ 2LiCl(aq) 
D) BaCl2(aq)+ Li2SO4(aq)→ BaSO4(s)+ 2LiCl(aq) 
E) No net reaction occurs.

Question 15

Which of the following reactions best describes the acid-base properties of ammonia (NH3)in aqueous solution?

Accepted Answer

A) NH3(aq)+ 3H2O(l)→ N3-(aq)+ 3H3O+(aq) 
B) NH3(aq)→ N3-(aq)+ 3H+(aq) 
C) NH3(aq)+ H2O(l)   NH4+(aq)+ OH-(aq) 
D) NH3(aq)+ H2O(l)→ NH4+(aq)+ OH-(aq) 
E) NH3(aq)+ 3H2O(l)   N3-(aq)+ 3H3O+(aq) 
A) NH3(aq)+ 3H2O(l)→ N3-(aq)+ 3H3O+(aq) 
B) NH3(aq)→ N3-(aq)+ 3H+(aq) 
C) NH3(aq)+ H2O(l)   NH4+(aq)+ OH-(aq) 
D) NH3(aq)+ H2O(l)→ NH4+(aq)+ OH-(aq) 
E) NH3(aq)+ 3H2O(l)   N3-(aq)+ 3H3O+(aq)

Question 16

Which of the following solutes,dissolved in 1000 g of water,would provide the greatest number of particles?

Accepted Answer

A) 0.030 mol of urea,CO(NH2)2 
B) 0.030 mol of ammonium nitrate,NH4NO3 
C) 0.030 mol of barium chloride,BaCl2 
D) 0.030 mol of acetic acid,CH3COOH 
E) 0.030 mol of calcium sulfate,CaSO4 
A) 0.030 mol of urea,CO(NH2)2 
B) 0.030 mol of ammonium nitrate,NH4NO3 
C) 0.030 mol of barium chloride,BaCl2 
D) 0.030 mol of acetic acid,CH3COOH 
E) 0.030 mol of calcium sulfate,CaSO4

Question 17

Which anion will form a precipitate with NH4+?

Accepted Answer

A) Cl- 
B) SO42- 
C) C2H3O2- 
D) S2- 
E) none of the above 
A) Cl- 
B) SO42- 
C) C2H3O2- 
D) S2- 
E) none of the above

Question 18

Which of the following is not an Arrhenius base?

Accepted Answer

A) NH3 
B) NaOH 
C) Ba(OH)2 
D) Mg(OH)2 
E) all are Arrhenius bases 
A) NH3 
B) NaOH 
C) Ba(OH)2 
D) Mg(OH)2 
E) all are Arrhenius bases

Question 19

Which of the following species would be expected to function as a reducing agent?

Accepted Answer

A) Ba2+ 
B) Zn2+ 
C) ClO4- 
D) Cs+ 
E) V2+ 
A) Ba2+ 
B) Zn2+ 
C) ClO4- 
D) Cs+ 
E) V2+

Question 20

All of the following reactions are described as decomposition reactions except

Accepted Answer

A) PCl5(l)→ PCl3(g)+ Cl2(g). 
B) 2CH3OH(l)+ 3O2(g)→ 2CO2(g)+ 4H2O(g). 
C) NH4HS(s)→ NH3(g)+ H2S(g). 
D) (NH4)2Cr2O7(s)→ N2(g)+ 4H2O(g)+ Cr2O3(s). 
E) 2CO2(g)→ 2CO(g)+ O2(g). 
A) PCl5(l)→ PCl3(g)+ Cl2(g). 
B) 2CH3OH(l)+ 3O2(g)→ 2CO2(g)+ 4H2O(g). 
C) NH4HS(s)→ NH3(g)+ H2S(g). 
D) (NH4)2Cr2O7(s)→ N2(g)+ 4H2O(g)+ Cr2O3(s). 
E) 2CO2(g)→ 2CO(g)+ O2(g).

Exam 4: Chemical Reactions

Which of the following is a weak acid in aqueous solution?

Which anion will form a precipitate with Ca2+?

Which of the following conversions is not an oxidation-reduction reaction?

What minimum mass of iron (II)nitrate must be added to 10.0 of a 0.0699 M phosphate solution in order to completely precipitate all of the phosphate as solid iron (II)phosphate? 2PO43-(aq)+ 3Fe(NO3)2(aq)→ Fe3(PO4)2(s)+ 6NO3-(aq)

Which of the following aqueous solutions would be expected to be the best conductor of an electric current at room temperature?

All the following are oxidation-reduction reactions except

All of the following reactions are described as decomposition reactions except

Identify the spectator ion(s)in the following reaction. Cu(OH)2(s)+ 2H+(aq)+ 2Cl-(aq)→ Cu2+(aq)+ 2Cl-(aq)+ 2H2O(l)

A precipitate will form when a freshly prepared aqueous carbonic acid solution is added to an aqueous solution of

In order to determine the amount of chloride ion in a solution by using gravimetric analysis,which of the following should you add to the solution?

All the following are strong acids in aqueous solution except

What is the oxidation number of Ba in BaFeO4?

Which net ionic equation best represents the reaction that occurs when an aqueous solution of barium chloride is mixed with an aqueous solution of lithium sulfate?

Which of the following reactions best describes the acid-base properties of ammonia (NH3)in aqueous solution?

Which of the following solutes,dissolved in 1000 g of water,would provide the greatest number of particles?

Which anion will form a precipitate with NH4+?

Which of the following is not an Arrhenius base?

Which of the following species would be expected to function as a reducing agent?

All of the following reactions are described as decomposition reactions except

Chemistry and Measurement

Atoms, molecules, and Ions

Calculations With Chemical Formulas and Equations

The Gaseous State

Thermochemistry

Quantum Theory of the Atom

Electron Configurations and Periodicity

Ionic and Covalent Bonding

Molecular Geometry and Chemical Bonding Theory

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Acid-Base Equilibria

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Filters

Which anion will form a precipitate with Ca²⁺?

What minimum mass of iron (II)nitrate must be added to 10.0 of a 0.0699 M phosphate solution in order to completely precipitate all of the phosphate as solid iron (II)phosphate? 2PO₄^3-(aq)+ 3Fe(NO₃)₂(aq)→ Fe₃(PO₄)₂(s)+ 6NO₃^-(aq)

Identify the spectator ion(s)in the following reaction. Cu(OH)₂(s)+ 2H⁺(aq)+ 2Cl^-(aq)→ Cu²⁺(aq)+ 2Cl^-(aq)+ 2H₂O(l)

What is the oxidation number of Ba in BaFeO₄?

Which of the following reactions best describes the acid-base properties of ammonia (NH₃)in aqueous solution?

Which anion will form a precipitate with NH₄⁺?