Question 1

A precipitate is expected when an aqueous solution of potassium iodide is added to an aqueous solution of

Accepted Answer

A)   calcium nitrate.
B)   barium hydroxide.
C)   lead perchlorate.
D)   iron(II) chloride.
E)   sodium sulfate.

Question 2

Which of the following compounds is  soluble ‾\underline{	ext{soluble    }}soluble ​  in water?

Accepted Answer

A)   Sc2O3
B)   Cs3N
C)   FeS
D)   Hg2Br2
E)   CdS

Question 3

The net ionic equation for the reaction of barium chloride and sodium sulfate is shown below.Ba2+(aq)+ SO42-(aq)$\to$  BaSO4(s)
Chloride and sodium ions are referred to as ________ ions because they are not involved in the reaction.

Accepted Answer

The answer of The net ionic equation for the reaction...

Question 4

What is the oxidation number of each O in BaFeO4?

Accepted Answer

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

Question 5

Which of the following statements is/are CORRECT?
1) Most ionic compounds containing nitrate ion are soluble in water.
2) Most ionic compounds containing sulfate ion are insoluble in water.
3) Most ionic compounds containing carbonate ion are soluble in water.

Accepted Answer

A)   1 only
B)   2 only
C)   3 only
D)   1 and 2
E)   1,2,and 3

Question 6

What is the balanced chemical equation for the complete combustion of benzoic acid,C6H5CO2H,to form carbon dioxide and water?

Accepted Answer

A)   C6H5CO2H(s)  →	o→   6 C(s) + CO2(g) + 3 H2(g) 
B)   C6H5CO2H(s)  →	o→   7 CO2(g) + 3 H2O(g) 
C)   C6H5CO2H(s) + O2(g)  →	o→   CO2(g) + H2O(g) 
D)   C6H5CO2H(s) + 8 O2(g)  →	o→   7 CO2(g) + 3 H2O(g) 
E)   2 C6H5CO2H(s) + 15 O2(g)  →	o→   14 CO2(g) + 6 H2O(g)

Question 7

________ acid is produced in a larger quantity than any other chemical in the United States.This chemical is used in the production of fertilizers,pigments,alcohol,paper and detergents.

Accepted Answer

The answer of ________ acid is produced in a larger...

Question 8

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

Accepted Answer

A)   Mg(OH) 2
B)   NH3
C)   NaOH
D)   KOH
E)   Ba(OH) 2

Question 9

Which of the following statements concerning electrolytes and nonelectrolytes is/are true?
1) Some molecular substances are electrolytes.
2) All electrolytes are ionic substances.
3) Strong electrolytes partially ionize in solution.

Accepted Answer

A)   1 only
B)   2 only
C)   3 only
D)   1 and 3
E)   2 and 3

Question 10

The complete combustion of nonane,C9H20,yields carbon dioxide and water: 9H20,yields carbon dioxide and water:   The  \underline{	ext{ smallest whole-number }}   coefficient of  \underline{	ext{  oxygen }}   in the balanced equation is A)  15. B)  12. C)  16. D)  13. E)  14. " class="answers-bank-image d-inline" rel="preload" > The   smallest whole-number ‾\underline{	ext{ smallest whole-number }} smallest whole-number ​   coefficient of   oxygen ‾\underline{	ext{  oxygen }} oxygen ​   in the balanced equation is

Accepted Answer

A)   15.
B)   12.
C)   16.
D)   13.
E)   14.

Question 11

Which species in the reaction below undergoes reduction?
H2O(g) + CO(g)  →	o→  H2(g) + CO2(g)

Accepted Answer

A)   H2O
B)   CO
C)   H2
D)   CO2
E)   None

Question 12

Write a balanced chemical equation for the reaction of aqueous solutions of ammonium sulfate and sodium hydroxide.

Accepted Answer

A)   (NH4) 2SO4(aq) + 2 NaOH(aq)  →	o→   2 NH4OH(aq) + SO3(g) + Na2O(aq) 
B)   (NH3) 2SO4(aq) + NaOH(aq)  →	o→   2 NH3(g) + NaOHSO4(aq) 
C)   (NH3) 2SO4(aq) + 2 NaOH(aq)  →	o→   2 NH3(g) + Na2SO4(aq) + 2 OH-(aq) 
D)   (NH4) 2SO4(aq) + 2 NaOH(aq)  →	o→   2 NH4+(g) + Na2SO4(aq) + 2 OH-(aq) 
E)   (NH4) 2SO4(aq) + 2 NaOH(aq)  →	o→   2 NH3(g) + 2 H2O( 4) 2SO4(aq) + 2 NaOH(aq)  	o   2 NH4OH(aq) + SO3(g) + Na2O(aq)  
B)   (NH3) 2SO4(aq) + NaOH(aq)  	o   2 NH3(g) + NaOHSO4(aq)  
C)   (NH3) 2SO4(aq) + 2 NaOH(aq)  	o   2 NH3(g) + Na2SO4(aq) + 2 OH-(aq)  
D)   (NH4) 2SO4(aq) + 2 NaOH(aq)  	o   2 NH4+(g) + Na2SO4(aq) + 2 OH-(aq)  
E)   (NH4) 2SO4(aq) + 2 NaOH(aq)  	o   2 NH3(g) + 2 H2O(   ) + Na2SO4(aq)  " class="answers-bank-image d-inline" rel="preload" > ) + Na2SO4(aq)

Question 13

When solutions of barium chloride and lithium sulfate are mixed,the   spectator ions ‾\underline{	ext{  spectator ions }} spectator ions ​   in the resulting precipitation reaction are

Accepted Answer

A)   only SO42-.
B)   both Li+ and Cl-.
C)   only Cl-.
D)   only Li+.
E)   only Ba2+.

Question 14

Ionic and molecular compounds that form ions in aqueous solution are called _____.

Accepted Answer

The answer of Ionic and molecular compounds that form ions...

Question 15

What base results when Li2O reacts with water?

Accepted Answer

A)   H3O+(aq) 
B)   LiH(aq) 
C)   O2-(aq) 
D)   LiOH(aq) 
E)   LiO-(aq)

Question 16

The reaction of elemental chlorine with potassium iodide yields elemental iodine and potassium chloride.Write a balanced chemical equation for this reaction.

Accepted Answer

A)   Cl2(g) + KI(s)  →	o→  I(s) + KCl2(s) 
B)   Cl2(g) + 2 KI(s)  →	o→ I2(s) + 2 KCl(s) 
C)   Cl2(g) + KI2(s)  →	o→ I2(s) + KCl2(s) 
D)   Cl(g) + KI(s)  →	o→  I(s) + KCl(s) 
E)   Cl2(g) + 2 K2I(s)  →	o→  I2(s) + 2 K2Cl(s)

Question 17

Which equation best represents the   net ionic reaction ‾\underline{	ext{ net ionic reaction }} net ionic reaction ​   that occurs when an aqueous solution of barium bromide is mixed with an aqueous solution of sodium sulfate?

Accepted Answer

A)   2H+(aq) + 2Br-(aq)  →	o→   2HBr(g) 
B)   Ba2+(aq) + SO42-(aq)  →	o→   BaSO4(s) 
C)   Ba2+(aq) + 2Br-(aq) + 2Na+(aq) + SO42-(aq)  →	o→   BaSO4(s) + 2NaBr(aq) 
D)   BaBr2(aq) + Na2SO4(aq)  →	o→   BaSO4(s) + 2NaBr(aq) 
E)   No net reaction occurs.

Question 18

What is the oxidation number of each atom in sodium hydrogen carbonate,NaHCO3?

Accepted Answer

A)   Na = +1,   ~~   H = -1,   ~~   C = +6,O = -2
B)   Na = +1,   ~~   H = +1,   ~~   C = +4,O = -2
C)   Na = +1,   ~~   H = -1,   ~~   C = +2,O = -2
D)   Na = -1,   ~~   H = +1,   ~~   C = 0,O = -2
E)   Na = 0,   ~~   H = 0,   ~~   C = 0,O = 0

Question 19

Which of the following chemical equations show oxidation-reduction reactions?
1) Mg(s) + I2(aq)  →	o→  MgI2(s) 
2) Pb(ClO4) 2(aq) + 2 KI(aq)  →	o→   PbI2(s) + 2 KClO4(aq) 
3) Fe2O3(s) + 3 CO(g)  →	o→   2 Fe(s) + 3 CO2(g)

Accepted Answer

A)   1 only
B)   2 only
C)   1 and 2
D)   1 and 3
E)   2 and 3

Question 20

Which molecule in the reaction below is the oxidizing agent?
2 C2H6(g) + 7 O2(g)  →	o→   4 CO2(g) + 6 H2O(g)

Accepted Answer

A)   C2H6
B)   O2
C)   H2O
D)   CO2
E)   None

Exam 4: Chemical Reactions

Which species in the reaction below undergoes reduction? H₂O(g) + CO(g) $\to$ H₂(g) + CO₂(g)

Correct Answer
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Which molecule in the reaction below is the oxidizing agent? 2 C₂H₆(g) + 7 O₂(g) $\to$ 4 CO₂(g) + 6 H₂O(g)

Correct Answer
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What is the oxidation number of each atom in sodium hydrogen carbonate,NaHCO₃?

Correct Answer
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Which of the following is a weak electrolyte in aqueous solution?

Correct Answer
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________ acid is produced in a larger quantity than any other chemical in the United States.This chemical is used in the production of fertilizers,pigments,alcohol,paper and detergents.

Correct Answer
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Ionic and molecular compounds that form ions in aqueous solution are called _____.

Correct Answer
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What is the balanced chemical equation for the complete combustion of benzoic acid,C₆H₅CO₂H,to form carbon dioxide and water?

Correct Answer
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Which of the following statements concerning electrolytes and nonelectrolytes is/are true? 1) Some molecular substances are electrolytes. 2) All electrolytes are ionic substances. 3) Strong electrolytes partially ionize in solution.

Correct Answer
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What base results when Li₂O reacts with water?

Correct Answer
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Which of the following statements is/are CORRECT? 1) Most ionic compounds containing nitrate ion are soluble in water. 2) Most ionic compounds containing sulfate ion are insoluble in water. 3) Most ionic compounds containing carbonate ion are soluble in water.

Correct Answer
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Write a balanced chemical equation for the reaction of aqueous solutions of ammonium sulfate and sodium hydroxide.

Correct Answer
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When solutions of barium chloride and lithium sulfate are mixed,the $\underline{\text{ spectator ions }}$ in the resulting precipitation reaction are

Correct Answer
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Which of the following compounds is $\underline{\text{soluble }}$ in water?

Correct Answer
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A precipitate is expected when an aqueous solution of potassium iodide is added to an aqueous solution of

Correct Answer
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The net ionic equation for the reaction of barium chloride and sodium sulfate is shown below.Ba²⁺(aq)+ SO₄^2-(aq) $\to$ BaSO₄(s) Chloride and sodium ions are referred to as ________ ions because they are not involved in the reaction.

Correct Answer
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What is the oxidation number of each O in BaFeO₄?

Correct Answer
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Which equation best represents the $\underline{\text{ net ionic reaction }}$ that occurs when an aqueous solution of barium bromide is mixed with an aqueous solution of sodium sulfate?

Correct Answer
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The reaction of elemental chlorine with potassium iodide yields elemental iodine and potassium chloride.Write a balanced chemical equation for this reaction.

Correct Answer
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Which of the following chemical equations show oxidation-reduction reactions? 1) Mg(s) + I₂(aq) $\to$ MgI₂(s) 2) Pb(ClO₄) ₂(aq) + 2 KI(aq) $\to$ PbI₂(s) + 2 KClO₄(aq) 3) Fe₂O₃(s) + 3 CO(g) $\to$ 2 Fe(s) + 3 CO₂(g)

Correct Answer
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Correct Answer
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Exam 4: Chemical Reactions

Which species in the reaction below undergoes reduction? H2O(g) + CO(g) →\to→ H2(g) + CO2(g)

Correct AnswerverifiedShow Answer

Which molecule in the reaction below is the oxidizing agent? 2 C2H6(g) + 7 O2(g) →\to→ 4 CO2(g) + 6 H2O(g)

Correct AnswerverifiedShow Answer

What is the oxidation number of each atom in sodium hydrogen carbonate,NaHCO3?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

________ acid is produced in a larger quantity than any other chemical in the United States.This chemical is used in the production of fertilizers,pigments,alcohol,paper and detergents.

Correct AnswerverifiedShow Answer

Ionic and molecular compounds that form ions in aqueous solution are called _____.

Correct AnswerverifiedShow Answer

What is the balanced chemical equation for the complete combustion of benzoic acid,C6H5CO2H,to form carbon dioxide and water?

Correct AnswerverifiedShow Answer

Which of the following statements concerning electrolytes and nonelectrolytes is/are true? 1) Some molecular substances are electrolytes. 2) All electrolytes are ionic substances. 3) Strong electrolytes partially ionize in solution.

Correct AnswerverifiedShow Answer

What base results when Li2O reacts with water?

Correct AnswerverifiedShow Answer

Which of the following statements is/are CORRECT? 1) Most ionic compounds containing nitrate ion are soluble in water. 2) Most ionic compounds containing sulfate ion are insoluble in water. 3) Most ionic compounds containing carbonate ion are soluble in water.

Correct AnswerverifiedShow Answer

Write a balanced chemical equation for the reaction of aqueous solutions of ammonium sulfate and sodium hydroxide.

Correct AnswerverifiedShow Answer

When solutions of barium chloride and lithium sulfate are mixed,the spectator ions ‾\underline{\text{ spectator ions }} spectator ions ​ in the resulting precipitation reaction are

Correct AnswerverifiedShow Answer

Which of the following compounds is soluble ‾\underline{\text{soluble }}soluble ​ in water?

Correct AnswerverifiedShow Answer

A precipitate is expected when an aqueous solution of potassium iodide is added to an aqueous solution of

Correct AnswerverifiedShow Answer

The net ionic equation for the reaction of barium chloride and sodium sulfate is shown below.Ba2+(aq)+ SO42-(aq) →\to→ BaSO4(s) Chloride and sodium ions are referred to as ________ ions because they are not involved in the reaction.

Correct AnswerverifiedShow Answer

What is the oxidation number of each O in BaFeO4?

Correct AnswerverifiedShow Answer

Which equation best represents the net ionic reaction ‾\underline{\text{ net ionic reaction }} net ionic reaction ​ that occurs when an aqueous solution of barium bromide is mixed with an aqueous solution of sodium sulfate?

Correct AnswerverifiedShow Answer

The reaction of elemental chlorine with potassium iodide yields elemental iodine and potassium chloride.Write a balanced chemical equation for this reaction.

Correct AnswerverifiedShow Answer

Which of the following chemical equations show oxidation-reduction reactions? 1) Mg(s) + I2(aq) →\to→ MgI2(s) 2) Pb(ClO4) 2(aq) + 2 KI(aq) →\to→ PbI2(s) + 2 KClO4(aq) 3) Fe2O3(s) + 3 CO(g) →\to→ 2 Fe(s) + 3 CO2(g)

Correct AnswerverifiedShow Answer

The complete combustion of nonane,C9H20,yields carbon dioxide and water: The smallest whole-number ‾\underline{\text{ smallest whole-number }} smallest whole-number ​ coefficient of oxygen ‾\underline{\text{ oxygen }} oxygen ​ in the balanced equation is

Correct AnswerverifiedShow Answer

Which species in the reaction below undergoes reduction? H₂O(g) + CO(g) $\to$ H₂(g) + CO₂(g)

Correct Answer
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Which molecule in the reaction below is the oxidizing agent? 2 C₂H₆(g) + 7 O₂(g) $\to$ 4 CO₂(g) + 6 H₂O(g)

Correct Answer
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What is the oxidation number of each atom in sodium hydrogen carbonate,NaHCO₃?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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What is the balanced chemical equation for the complete combustion of benzoic acid,C₆H₅CO₂H,to form carbon dioxide and water?

Correct Answer
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Correct Answer
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What base results when Li₂O reacts with water?

Correct Answer
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Correct Answer
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Correct Answer
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When solutions of barium chloride and lithium sulfate are mixed,the $\underline{\text{ spectator ions }}$ in the resulting precipitation reaction are

Correct Answer
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Which of the following compounds is $\underline{\text{soluble }}$ in water?

Correct Answer
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Correct Answer
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The net ionic equation for the reaction of barium chloride and sodium sulfate is shown below.Ba²⁺(aq)+ SO₄^2-(aq) $\to$ BaSO₄(s) Chloride and sodium ions are referred to as ________ ions because they are not involved in the reaction.

Correct Answer
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What is the oxidation number of each O in BaFeO₄?

Correct Answer
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Which equation best represents the $\underline{\text{ net ionic reaction }}$ that occurs when an aqueous solution of barium bromide is mixed with an aqueous solution of sodium sulfate?

Correct Answer
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Correct Answer
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Which of the following chemical equations show oxidation-reduction reactions? 1) Mg(s) + I₂(aq) $\to$ MgI₂(s) 2) Pb(ClO₄) ₂(aq) + 2 KI(aq) $\to$ PbI₂(s) + 2 KClO₄(aq) 3) Fe₂O₃(s) + 3 CO(g) $\to$ 2 Fe(s) + 3 CO₂(g)

Correct Answer
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Correct Answer
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