Question 1

What are the products when aqueous solutions of HCl and Na2CO3 react?

Accepted Answer

A)   NaCl and HCO3
B)   NaCl, H2O and CO2
C)   NaCl and HCO3-
D)   NaH and Cl2CO3
E)   None of these choices are correct.F) B) and C)
G) A) and E)

Question 2

Which of the following is a strong base?

Accepted Answer

A)   NH3
B)   Ca(OH) 2
C)   Al(OH) 3
D)   B(OH) 3
E)   CH3OHF) A) and E)
G) B) and E)

Question 3

What is the oxidation number of iodine in I2.

Accepted Answer

A)   -1
B)   0
C)   +1
D)   +7
E)   None of these choices are correct.F) A) and D)
G) C) and D)

Question 4

Consider the reaction: 3Co2+(aq)  + 6NO3(aq)  + 6Na+(aq)  + 2PO43-(aq)  → Co3(PO4) 2(s)  + 6Na+(aq)  + 6NO3(aq) 
Identify the net ionic equation for this reaction.

Accepted Answer

A)   Na+(aq)  + NO3-(aq)  → NaNO3(aq) 
B)   3Co2+(aq)  + NO3-(aq)  + Na+(aq)  + 2PO43-(aq)  → Co3(PO4) 2(s)  + NaNO3(aq) 
C)   3Co2+(aq)  + 6NO3-(aq)  + 6Na+(aq)  + 2PO43-(aq)  → Co3(PO4) 2(s)  + 6NaNO3(aq) 
D)   3Co2+(aq)  + 2PO43-(aq)  → Co3(PO4) 2(s) 
E)   None of these choices are correct.F) A) and C)
G) C) and D)

Question 5

When a solution is diluted with water, the ratio of the initial to final volumes of solution is equal to the ratio of final to initial molarities.

Accepted Answer

A) True 
 B)False

Question 6

What, if any, are the spectator ions when aqueous solutions of HBr and RbOH neutralize each other?

Accepted Answer

A)   H+ and OH-
B)   H+ and Rb+
C)   Rb+ and Br-
D)   Br- and OH-
E)   There are no spectator ions in this reaction.F) B) and C)
G) A) and B)

Question 7

What volume of a 0.100 M solution of HCl is required to neutralize a solution prepared by dissolving 10.0 g of KOH in 250 ml of H2O?

Accepted Answer

A)   0.178 L
B)   0.25 L
C)   0.71 L
D)   1.78 L
E)   178 LF) A) and C)
G) All of the above

Question 8

Which one of the following substances is a strong acid?

Accepted Answer

A)   HNO3
B)   H2CO3
C)   NH3
D)   CH3COOH
E)   H3PO4F) A) and B)
G) C) and D)

Question 9

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 these choices are correct.F) A) and E)
G) A) and D)

Question 10

In a redox reaction, electrons are transferred

Accepted Answer

A)   from the substance being oxidized to the reducing agent.
B)   from the oxidizing agent to the reducing agent.
C)   from the substance being reduced to the oxidizing agent.
D)   from the substance being oxidized to the substance being reduced.
E)   from the substance being reduced to the substance being oxidized.F) B) and E)
G) A) and D)

Question 11

In a redox reaction, the reducing agent undergoes loss of electrons.

Accepted Answer

A) True 
 B)False

Exam 4: Three Major Classes of Chemical Reactions

In a redox reaction, the reducing agent undergoes loss of electrons.

Correct Answer
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What is the oxidation number of iodine in I₂.

Correct Answer
verified

Which of the following is a strong base?

Correct Answer
verified

In a redox reaction, electrons are transferred

Correct Answer
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What are the products when aqueous solutions of HCl and Na₂CO₃ react?

Correct Answer
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Which one of the following substances is a strong acid?

Correct Answer
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Consider the reaction: 3Co₂₊(aq) + 6NO₃(aq) + 6Na₊(aq) + 2PO₄3-(aq) → Co₃(PO₄) ₂(s) + 6Na₊(aq) + 6NO₃(aq) Identify the net ionic equation for this reaction.

Correct Answer
verified

What volume of a 0.100 M solution of HCl is required to neutralize a solution prepared by dissolving 10.0 g of KOH in 250 ml of H2O?

Correct Answer
verified

When a solution is diluted with water, the ratio of the initial to final volumes of solution is equal to the ratio of final to initial molarities.

Correct Answer
verified

What, if any, are the spectator ions when aqueous solutions of HBr and RbOH neutralize each other?

Correct Answer
verified

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

Correct Answer
verified

Exam 4: Three Major Classes of Chemical Reactions

In a redox reaction, the reducing agent undergoes loss of electrons.

Correct AnswerverifiedShow Answer

What is the oxidation number of iodine in I2.

Correct AnswerverifiedShow Answer

Which of the following is a strong base?

Correct AnswerverifiedShow Answer

In a redox reaction, electrons are transferred

Correct AnswerverifiedShow Answer

What are the products when aqueous solutions of HCl and Na2CO3 react?

Correct AnswerverifiedShow Answer

Which one of the following substances is a strong acid?

Correct AnswerverifiedShow Answer

Consider the reaction: 3Co2+(aq) + 6NO3(aq) + 6Na+(aq) + 2PO43-(aq) → Co3(PO4) 2(s) + 6Na+(aq) + 6NO3(aq) Identify the net ionic equation for this reaction.

Correct AnswerverifiedShow Answer

What volume of a 0.100 M solution of HCl is required to neutralize a solution prepared by dissolving 10.0 g of KOH in 250 ml of H2O?

Correct AnswerverifiedShow Answer

When a solution is diluted with water, the ratio of the initial to final volumes of solution is equal to the ratio of final to initial molarities.

Correct AnswerverifiedShow Answer

What, if any, are the spectator ions when aqueous solutions of HBr and RbOH neutralize each other?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Correct Answer
verified

What is the oxidation number of iodine in I₂.

Correct Answer
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Correct Answer
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Correct Answer
verified

What are the products when aqueous solutions of HCl and Na₂CO₃ react?

Correct Answer
verified

Correct Answer
verified

Consider the reaction: 3Co₂₊(aq) + 6NO₃(aq) + 6Na₊(aq) + 2PO₄3-(aq) → Co₃(PO₄) ₂(s) + 6Na₊(aq) + 6NO₃(aq) Identify the net ionic equation for this reaction.

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
verified

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

Correct Answer
verified