Question 1

A precipitate will form when you mix solutions of potassium chloride and lead nitrate.

Accepted Answer

A) True 
 B)False

Question 2

A precipitation reaction occurs when water is formed as a product.

Accepted Answer

A) True 
 B)False

Question 3

Cl-,Br-,and I- are mostly insoluble.

Accepted Answer

A) True 
 B)False

Question 4

The mixing of sodium metal and chlorine gas would be the type of reaction known as:

Accepted Answer

A)  oxidation-reduction
B)  gas evolution
C)  neutralization
D)  precipitation
E)  none of the above

Question 5

The net ionic equation for the reaction of sodium hydroxide plus hydrochloric acid is  
.

Accepted Answer

A) True 
 B)False

Question 6

What is the gas produced when hydrochloric acid is reacted with ammonium carbonate?

Accepted Answer

A)  ammonia
B)  chlorine
C)  hydrogen
D)  carbon dioxide
E)  none of the above

Question 7

Which of the following is NOT an acid?

Accepted Answer

A)  HClO4
B)  HNO3
C)  HC2H3O2
D)  H2SO4
E)  none of the above

Question 8

What is the net ionic equation for the reaction of hydrochloric acid with potassium hydroxide?

Accepted Answer

A)  H+ + Cl- + K+ + OH- → H2O + K+ + Cl-
B)  HCl + KOH → H2O + KCl
C)  H+ + OH- → H2O
D)  2H+ +2Cl- + K2+ + 2OH- → H2O + K2+ +2 Cl-
E)  none of the above

Question 9

When balancing a chemical equation you may alter the coefficients but not the subscripts in the equation.

Accepted Answer

A) True 
 B)False

Question 10

Considering the following precipitation reaction:
Pb(NO3) 2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq) 
What is the correct complete ionic equation?

Accepted Answer

A)  Pb2+ + (NO3) 2- + 2K+ + 2I- → PbI2(s) + 2K+ + 2NO3-
B)  Pb2+ + 2NO3- +2K+ + I- → PbI2(s) + 2K+ + NO3-
C)  Pb2+ + 2NO3- + 2K+ + 2I- → PbI2(s) + 2K+ + 2NO3-
D)  Pb2+ + 2NO3- + 2K+ + 2I- → Pb2+ + 2I- + 2K+ + 2NO3-
E)  none of the above

Question 11

Considering the following precipitation reaction:
Pb(NO3) 2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq) 
Which ion(s) would NOT be present in the net ionic equation?

Accepted Answer

A)  Pb2+,NO3-
B)  K+,NO3-
C)  K+, Pb2+
D)  K+, I-
E)  All the above ions are in the net ionic equation.

Question 12

A strong electrolyte solution contains ionic compounds that completely dissociate in water.

Accepted Answer

A) True 
 B)False

Question 13

Which statement about ozone is TRUE?

Accepted Answer

A)  Ozone normally forms in the upper atmosphere.
B)  Chlorofluorocarbons deplete the ozone layer.
C)  Ozone protects life on Earth from harmful ultraviolet light.
D)  None of the above statements are true.
E)  All the of the first three statements are true.

Question 14

Which of the following is NOT evidence that a chemical reaction has occurred?

Accepted Answer

A)  color change when chemicals are contacted with each other
B)  solid formation when chemicals are contacted with each other
C)  gas formation when chemicals are contacted with each other
D)  emission of light when chemicals are contact with each other
E)  All of the above are evidence of a chemical reaction.

Question 15

A precipitation reaction will occur when sodium chloride is mixed with potassium nitrate.

Accepted Answer

A) True 
 B)False

Question 16

A redox reaction has occurred ________.

Accepted Answer

A)  when a substance reacts with elemental oxygen
B)  when an alkali metal reacts with an alkaline earth metal
C)  when one substance transfers protons to another
D)  when one substance forms a solid
E)  when all of the above occur

Question 17

What type of reaction is the generic equation 
?

Accepted Answer

A)  synthesis/combination
B)  decomposition
C)  single displacement
D)  double-displacement
E)  none of the above

Question 18

What type of a reaction occurs when a sodium hydroxide solution is mixed with an acetic acid solution?

Accepted Answer

A)  precipitation
B)  acid-base neutralization
C)  oxidation-reduction
D)  gas evolution
E)  no reaction

Question 19

What are the coefficients for the following reaction when it is properly balanced?
___potassium iodide + ___lead (II) acetate → ___lead (II) iodide +___potassium acetate

Accepted Answer

A)  2,1,1,1
B)  2,1,1,2
C)  3,2,2,1
D)  1,1,2,2
E)  none of the above

Question 20

When the equation __Ca3N2 + __H2O → __Ca(OH) 2 + __NH3 is balanced,the coefficient of H2O is:

Accepted Answer

A)  2
B)  3
C)  6
D)  12
E)  none of the above

Exam 7: Chemical Reactions

Which statement about ozone is TRUE?

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A precipitation reaction occurs when water is formed as a product.

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Which of the following is NOT an acid?

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Which of the following is NOT evidence that a chemical reaction has occurred?

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Considering the following precipitation reaction: Pb(NO3) 2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq) Which ion(s) would NOT be present in the net ionic equation?

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What is the net ionic equation for the reaction of hydrochloric acid with potassium hydroxide?

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What are the coefficients for the following reaction when it is properly balanced? ___potassium iodide + ___lead (II) acetate → ___lead (II) iodide +___potassium acetate

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When the equation __Ca3N2 + __H2O → __Ca(OH) 2 + __NH3 is balanced,the coefficient of H2O is:

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A precipitate will form when you mix solutions of potassium chloride and lead nitrate.

Correct AnswerverifiedShow Answer

A redox reaction has occurred ________.

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A strong electrolyte solution contains ionic compounds that completely dissociate in water.

Correct AnswerverifiedShow Answer

Considering the following precipitation reaction: Pb(NO3) 2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq) What is the correct complete ionic equation?

Correct AnswerverifiedShow Answer

What type of a reaction occurs when a sodium hydroxide solution is mixed with an acetic acid solution?

Correct AnswerverifiedShow Answer

The net ionic equation for the reaction of sodium hydroxide plus hydrochloric acid is .

Correct AnswerverifiedShow Answer

The mixing of sodium metal and chlorine gas would be the type of reaction known as:

Correct AnswerverifiedShow Answer

What type of reaction is the generic equation ?

Correct AnswerverifiedShow Answer

Cl-,Br-,and I- are mostly insoluble.

Correct AnswerverifiedShow Answer

A precipitation reaction will occur when sodium chloride is mixed with potassium nitrate.

Correct AnswerverifiedShow Answer

What is the gas produced when hydrochloric acid is reacted with ammonium carbonate?

Correct AnswerverifiedShow Answer

When balancing a chemical equation you may alter the coefficients but not the subscripts in the equation.

Correct AnswerverifiedShow Answer

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Considering the following precipitation reaction: Pb(NO₃) ₂(aq) + 2KI(aq) → PbI₂(s) + 2KNO₃(aq) Which ion(s) would NOT be present in the net ionic equation?

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What are the coefficients for the following reaction when it is properly balanced? _potassium iodide + _lead (II) acetate → _lead (II) iodide +_potassium acetate

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When the equation Ca₃N₂ + H₂O → Ca(OH) ₂ + NH₃ is balanced,the coefficient of H₂O is:

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Considering the following precipitation reaction: Pb(NO₃) ₂(aq) + 2KI(aq) → PbI₂(s) + 2KNO₃(aq) What is the correct complete ionic equation?

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Cl^-,Br^-,and I^- are mostly insoluble.

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