Question 1

Complete and balance the equation for the following acid-base reaction.
Ca(OH)2(aq) + HCl(aq) F1F1F1S1F1F1F10

Accepted Answer

Ca(OH)₂(aq) + 2HCl(aq...

Question 2

Select the classification for the following reaction. Fe2+(aq)  + 2OH-(aq)   Fe(OH) 2(s)

Accepted Answer

A)   precipitation
B)   acid-base
C)   redox
D)   decomposition
E)   none of the aboveF) A) and B)
G) B) and D)

Question 3

Which one of the following is not a redox reaction?

Accepted Answer

A)   2Na(s)  + 2H2O(l)   2NaOH(aq)  + H2(g) 
B)   H2(g)  + Cl2(g)   2HCl(g) 
C)   2H2O2(aq)   2H2O(l)  + O2(g) 
D)   Fe2O3(s)  + 3H2SO4(aq)   Fe2(SO4) 3(aq)  + 3H2O(l) 
E)   2KMnO4(aq)  + 10FeSO4(aq)  + 8H2SO4(aq)   K2SO4(aq)  + 2MnSO4(aq)  + 5Fe2(SO4) 3(aq)  + 8H2O(l) F) C) and E)
G) A) and C)

Question 4

Predict the products by completing a balanced equation for the following decomposition reaction. CaCl2(l)  2(l)    ? A)  CaCl2(l)    Ca(l)  + 2Cl-(l)  B)  CaCl2(l)    Ca2+(l)  + Cl2(g)  C)  CaCl2(l)    Ca2+(l)  + 2Cl-(l)  D)  CaCl2(l)    Ca(l)  + Cl2(g)  E)  CaCl2(l)    CaCl(l)  + Cl-(l) " class="answers-bank-image d-inline" rel="preload" > ?

Accepted Answer

A)   CaCl2(l)  2(l)    ? 
A)   CaCl2(l)    Ca(l)  + 2Cl-(l)  
B)   CaCl2(l)    Ca2+(l)  + Cl2(g)  
C)   CaCl2(l)    Ca2+(l)  + 2Cl-(l)  
D)   CaCl2(l)    Ca(l)  + Cl2(g)  
E)   CaCl2(l)    CaCl(l)  + Cl-(l) " class="answers-bank-image d-inline" rel="preload" > Ca(l)  + 2Cl-(l) 
B)   CaCl2(l)  2(l)    ? 
A)   CaCl2(l)    Ca(l)  + 2Cl-(l)  
B)   CaCl2(l)    Ca2+(l)  + Cl2(g)  
C)   CaCl2(l)    Ca2+(l)  + 2Cl-(l)  
D)   CaCl2(l)    Ca(l)  + Cl2(g)  
E)   CaCl2(l)    CaCl(l)  + Cl-(l) " class="answers-bank-image d-inline" rel="preload" > Ca2+(l)  + Cl2(g) 
C)   CaCl2(l)  2(l)    ? 
A)   CaCl2(l)    Ca(l)  + 2Cl-(l)  
B)   CaCl2(l)    Ca2+(l)  + Cl2(g)  
C)   CaCl2(l)    Ca2+(l)  + 2Cl-(l)  
D)   CaCl2(l)    Ca(l)  + Cl2(g)  
E)   CaCl2(l)    CaCl(l)  + Cl-(l) " class="answers-bank-image d-inline" rel="preload" > Ca2+(l)  + 2Cl-(l) 
D)   CaCl2(l)  2(l)    ? 
A)   CaCl2(l)    Ca(l)  + 2Cl-(l)  
B)   CaCl2(l)    Ca2+(l)  + Cl2(g)  
C)   CaCl2(l)    Ca2+(l)  + 2Cl-(l)  
D)   CaCl2(l)    Ca(l)  + Cl2(g)  
E)   CaCl2(l)    CaCl(l)  + Cl-(l) " class="answers-bank-image d-inline" rel="preload" > Ca(l)  + Cl2(g) 
E)   CaCl2(l)  2(l)    ? 
A)   CaCl2(l)    Ca(l)  + 2Cl-(l)  
B)   CaCl2(l)    Ca2+(l)  + Cl2(g)  
C)   CaCl2(l)    Ca2+(l)  + 2Cl-(l)  
D)   CaCl2(l)    Ca(l)  + Cl2(g)  
E)   CaCl2(l)    CaCl(l)  + Cl-(l) " class="answers-bank-image d-inline" rel="preload" > CaCl(l)  + Cl-(l) F) B) and D)
G) B) and E)

Question 5

Select the best statement relating to the following reaction: 
2MnO2(s)  + KClO3(aq)  + 2KOH(aq)   2KMnO4(aq)  + KCl(aq)  + H2O(l)

Accepted Answer

A)   Mn in MnO2 is oxidized.
B)   O in KClO3 is the oxidizing agent.
C)   K in KClO3 is the reducing agent.
D)   H in KOH is oxidized.
E)   Cl in KClO3 is the reducing agent.F) B) and E)
G) B) and D)

Question 6

All acid-base reactions produce a salt and water as the only products.

Accepted Answer

A) True 
 B)False

Question 7

Aluminum metal dissolved in hydrochloric acid as follows:
2Al(s) + 6HCl(aq) F1F1F1S1F1F1F10 2AlCl3(aq) + 3H2(g)
a. What is the minimum volume of 6.0 M HCl(aq) needed to completely dissolve 3.20 g of aluminum in this reaction?
b. What mass of AlCl3 would be produced by complete reaction of 3.20 g of aluminum?

Accepted Answer

a. 59.3 mL...

Question 8

Which of the statements below correctly describes the combustion of glucose, shown below? C6H12O6 + 6O2  6CO2 + 6H2O

Accepted Answer

A)   Hydrogen in C6H12O6 is being reduced.
B)   Oxygen in O2 is being oxidized.
C)   Hydrogen in C6H12O6 is the reducing agent.
D)   Oxygen in C6H12O6 is the oxidizing agent.
E)   Carbon in C6H12O6 is being oxidized.F) B) and D)
G) C) and D)

Question 9

Magnesium carbonate, MgCO3, is insoluble. Identify the spectator ions when aqueous solutions of sodium carbonate and magnesium chloride are combined.

Accepted Answer

A)   Mg2+ and CO32-
B)   Na+ and Cl-
C)   Mg2+ and Cl-
D)   Na+ and CO32-
E)   None of the above correctly identifies the spectator ions.F) D) and E)
G) None of the above

Question 10

Write down the oxidation number of the indicated atom in each of the following formulas:
a. Si in SiO2
b. Cl in ClO2-
c. Mn in KMnO4
d. C in C6H12O6

Accepted Answer

a. +4
b. +...

Question 11

Which one of the following is not a redox reaction?

Accepted Answer

A)   2H2O2(aq)   2H2O(l)  + O2(g) 
B)   N2(g)  + 3H2(g)   2NH3(g) 
C)   BaCl2(aq)  + K2CrO4(aq)   BaCrO4(aq)  + 2KCl(aq) 
D)   2Al(s)  + Fe2O3(s)   Al2O3(s)  + 2Fe(s) 
E)   2H2O(g)   2H2(g)  + O2(g) F) A) and E)
G) A) and C)

Question 12

Which of the following solutions will be the best conductor of electrical current?

Accepted Answer

A)   methyl alcohol, CH3OH(aq) 
B)   glucose, C6H12O6(aq) 
C)   potassium chloride, KCl(aq) 
D)   bromine, Br2(aq) 
E)   ethylene glycol, C2H6O2(aq) F) B) and C)
G) B) and E)

Question 13

Which of the following is a strong acid?

Accepted Answer

A)   H3PO4
B)   HNO3
C)   HF
D)   CH3COOH
E)   H2OF) A) and B)
G) A) and D)

Question 14

The combustion of an element is always a combination reaction.

Accepted Answer

A) True 
 B)False

Question 15

Select the classification for the following reaction. H2CO3(aq)   H2O(l)  + CO2(g)

Accepted Answer

A)   combination
B)   decomposition
C)   displacement
D)   acid-base
E)   none of the aboveF) A) and B)
G) B) and C)

Question 16

Select the classification for the following reaction. NH3(aq)  + HNO3(aq)   NH4NO3(aq)

Accepted Answer

A)   precipitation
B)   acid-base
C)   redox
D)   decomposition
E)   none of the aboveF) A) and B)
G) A) and C)

Question 17

Predict the product(s)  for the following reaction. BaO(s)  + CO2(g)  

Accepted Answer

A)   Ba(s)  + CO3(g) 
B)   BaCO3(s) 
C)   BaO(s)  + C(s) 
D)   Ba(s)  + CO32-(s) 
E)   No reaction occurs.F) C) and D)
G) D) and E)

Question 18

A particular reaction may be both a precipitation and an acid-base (neutralization) reaction.

Accepted Answer

A) True 
 B)False

Question 19

Sodium chlorate is used as an oxidizer in the manufacture of dyes, explosives, and matches. Calculate the mass of solute needed to prepare 1.575 L of 0.00250 M NaClO3 ( 3 (   = 106.45 g/mol) . A)  419 g B)  169 g C)  0.419 g D)  0.169 g E)  0.00394 g" class="answers-bank-image d-inline" rel="preload" > = 106.45 g/mol) .

Accepted Answer

A)   419 g
B)   169 g
C)   0.419 g
D)   0.169 g
E)   0.00394 gF) A) and D)
G) B) and E)

Question 20

How many moles of H+(aq)  ions are present in 1.25 L of 0.75 M nitric acid?

Accepted Answer

A)   0.60 mol
B)   0.75 mol
C)   0.94 mol
D)   1.7 mol
E)   1.9 molF) A) and C)
G) A) and D)

Exam 4: The Major Classes of Chemical Reactions

Select the best statement relating to the following reaction: 2MnO₂(s) + KClO₃(aq) + 2KOH(aq)  2KMnO₄(aq) + KCl(aq) + H₂O(l)

Correct Answer
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Sodium chlorate is used as an oxidizer in the manufacture of dyes, explosives, and matches. Calculate the mass of solute needed to prepare 1.575 L of 0.00250 M NaClO₃( = 106.45 g/mol) .

Correct Answer
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Magnesium carbonate, MgCO₃, is insoluble. Identify the spectator ions when aqueous solutions of sodium carbonate and magnesium chloride are combined.

Correct Answer
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Predict the products by completing a balanced equation for the following decomposition reaction. CaCl₂(l) ?

Correct Answer
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Select the classification for the following reaction. NH₃(aq) + HNO₃(aq)  NH₄NO₃(aq)

Correct Answer
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Select the classification for the following reaction. Fe²⁺(aq) + 2OH^-(aq)  Fe(OH) ₂(s)

Correct Answer
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Correct Answer
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a. 59.3 mL...
View Answer

Select the classification for the following reaction. H₂CO₃(aq)  H₂O(l) + CO₂(g)

Correct Answer
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Which one of the following is not a redox reaction?

Correct Answer
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Which of the following is a strong acid?

Correct Answer
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Which of the statements below correctly describes the combustion of glucose, shown below? C₆H₁₂O₆ + 6O₂  6CO₂ + 6H₂O

Correct Answer
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Predict the product(s) for the following reaction. BaO(s) + CO₂(g) 

Correct Answer
verified

A particular reaction may be both a precipitation and an acid-base (neutralization) reaction.

Correct Answer
verified

The combustion of an element is always a combination reaction.

Correct Answer
verified

All acid-base reactions produce a salt and water as the only products.

Correct Answer
verified

How many moles of H⁺(aq) ions are present in 1.25 L of 0.75 M nitric acid?

Correct Answer
verified

Complete and balance the equation for the following acid-base reaction. Ca(OH)₂(aq) + HCl(aq) 

Correct Answer
verified
Ca(OH)₂(aq) + 2HCl(aq...
View Answer

Which of the following solutions will be the best conductor of electrical current?

Correct Answer
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Which one of the following is not a redox reaction?

Correct Answer
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Write down the oxidation number of the indicated atom in each of the following formulas: a. Si in SiO₂ b. Cl in ClO₂^- c. Mn in KMnO₄ d. C in C₆H₁₂O₆

Correct Answer
verified
a. +4
b. +...
View Answer

Exam 4: The Major Classes of Chemical Reactions

Select the best statement relating to the following reaction: 2MnO2(s) + KClO3(aq) + 2KOH(aq)  2KMnO4(aq) + KCl(aq) + H2O(l)

Correct AnswerverifiedShow Answer

Sodium chlorate is used as an oxidizer in the manufacture of dyes, explosives, and matches. Calculate the mass of solute needed to prepare 1.575 L of 0.00250 M NaClO3 ( = 106.45 g/mol) .

Correct AnswerverifiedShow Answer

Magnesium carbonate, MgCO3, is insoluble. Identify the spectator ions when aqueous solutions of sodium carbonate and magnesium chloride are combined.

Correct AnswerverifiedShow Answer

Predict the products by completing a balanced equation for the following decomposition reaction. CaCl2(l) ?

Correct AnswerverifiedShow Answer

Select the classification for the following reaction. NH3(aq) + HNO3(aq)  NH4NO3(aq)

Correct AnswerverifiedShow Answer

Select the classification for the following reaction. Fe2+(aq) + 2OH-(aq)  Fe(OH) 2(s)

Correct AnswerverifiedShow Answer

Aluminum metal dissolved in hydrochloric acid as follows: 2Al(s) + 6HCl(aq)  2AlCl3(aq) + 3H2(g) a. What is the minimum volume of 6.0 M HCl(aq) needed to completely dissolve 3.20 g of aluminum in this reaction? b. What mass of AlCl3 would be produced by complete reaction of 3.20 g of aluminum?

Correct Answerverifieda. 59.3 mL...View AnswerShow Answer

Select the classification for the following reaction. H2CO3(aq)  H2O(l) + CO2(g)

Correct AnswerverifiedShow Answer

Which one of the following is not a redox reaction?

Correct AnswerverifiedShow Answer

Which of the following is a strong acid?

Correct AnswerverifiedShow Answer

Which of the statements below correctly describes the combustion of glucose, shown below? C6H12O6 + 6O2  6CO2 + 6H2O

Correct AnswerverifiedShow Answer

Predict the product(s) for the following reaction. BaO(s) + CO2(g) 

Correct AnswerverifiedShow Answer

A particular reaction may be both a precipitation and an acid-base (neutralization) reaction.

Correct AnswerverifiedShow Answer

The combustion of an element is always a combination reaction.

Correct AnswerverifiedShow Answer

All acid-base reactions produce a salt and water as the only products.

Correct AnswerverifiedShow Answer

How many moles of H+(aq) ions are present in 1.25 L of 0.75 M nitric acid?

Correct AnswerverifiedShow Answer

Complete and balance the equation for the following acid-base reaction. Ca(OH)2(aq) + HCl(aq) 

Correct AnswerverifiedCa(OH)2(aq) + 2HCl(aq...View AnswerShow Answer

Which of the following solutions will be the best conductor of electrical current?

Correct AnswerverifiedShow Answer

Which one of the following is not a redox reaction?

Correct AnswerverifiedShow Answer

Write down the oxidation number of the indicated atom in each of the following formulas: a. Si in SiO2 b. Cl in ClO2- c. Mn in KMnO4 d. C in C6H12O6

Correct Answerverifieda. +4b. +...View AnswerShow Answer

Select the best statement relating to the following reaction: 2MnO₂(s) + KClO₃(aq) + 2KOH(aq)  2KMnO₄(aq) + KCl(aq) + H₂O(l)

Correct Answer
verified

Sodium chlorate is used as an oxidizer in the manufacture of dyes, explosives, and matches. Calculate the mass of solute needed to prepare 1.575 L of 0.00250 M NaClO₃( = 106.45 g/mol) .

Correct Answer
verified

Magnesium carbonate, MgCO₃, is insoluble. Identify the spectator ions when aqueous solutions of sodium carbonate and magnesium chloride are combined.

Correct Answer
verified

Predict the products by completing a balanced equation for the following decomposition reaction. CaCl₂(l) ?

Correct Answer
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Select the classification for the following reaction. NH₃(aq) + HNO₃(aq)  NH₄NO₃(aq)

Correct Answer
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Select the classification for the following reaction. Fe²⁺(aq) + 2OH^-(aq)  Fe(OH) ₂(s)

Correct Answer
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Correct Answer
verified
a. 59.3 mL...
View Answer

Select the classification for the following reaction. H₂CO₃(aq)  H₂O(l) + CO₂(g)

Correct Answer
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Correct Answer
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Correct Answer
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Which of the statements below correctly describes the combustion of glucose, shown below? C₆H₁₂O₆ + 6O₂  6CO₂ + 6H₂O

Correct Answer
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Predict the product(s) for the following reaction. BaO(s) + CO₂(g) 

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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How many moles of H⁺(aq) ions are present in 1.25 L of 0.75 M nitric acid?

Correct Answer
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Complete and balance the equation for the following acid-base reaction. Ca(OH)₂(aq) + HCl(aq) 

Correct Answer
verified
Ca(OH)₂(aq) + 2HCl(aq...
View Answer

Correct Answer
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Correct Answer
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Write down the oxidation number of the indicated atom in each of the following formulas: a. Si in SiO₂ b. Cl in ClO₂^- c. Mn in KMnO₄ d. C in C₆H₁₂O₆

Correct Answer
verified
a. +4
b. +...
View Answer