Question 1

Biodiesel fuels are more toxic to the environment than petroleum fuels are.

Accepted Answer

A) True 
 B)False

Question 2

The cheapest base is ________.

Accepted Answer

The answer of The cheapest base is ________....

Question 3

A salt that can conduct electricity when it is dissolved in water is a(n)

Accepted Answer

A) buffer. 
B) catalyst. 
C) electrolyte. 
D) indicator. 
A) buffer. 
B) catalyst. 
C) electrolyte. 
D) indicator.

Question 4

Sodium bicarbonate is the common name for what compound?

Accepted Answer

A) sodium carbonate 
B) sodium carbide 
C) sodium hydrogen carbonate 
D) sodium bismuth carbonate 
A) sodium carbonate 
B) sodium carbide 
C) sodium hydrogen carbonate 
D) sodium bismuth carbonate

Question 5

Which of the following is a correct definition of a base that is not dependent upon the solvent?

Accepted Answer

A) Bases produce hydronium ions. 
B) Bases are proton donors. 
C) Bases produce hydroxide ions. 
D) Bases are proton acceptors. 
A) Bases produce hydronium ions. 
B) Bases are proton donors. 
C) Bases produce hydroxide ions. 
D) Bases are proton acceptors.

Question 6

In what way are the green chemistry production of biodiesel fuel and of soap different?

Accepted Answer

A) Biodiesel fuels require the addition of acids, while production of soap uses bases. 
B) Biodiesel fuels are converted to methyl esters, while soaps are converted to sodium salts. 
C) Biodiesel fuels produce glycerol, while soap production produced methanol. 
D) Biodiesel fuel decreases the amount of waste produced, while soap production increases the amount of waste. 
A) Biodiesel fuels require the addition of acids, while production of soap uses bases. 
B) Biodiesel fuels are converted to methyl esters, while soaps are converted to sodium salts. 
C) Biodiesel fuels produce glycerol, while soap production produced methanol. 
D) Biodiesel fuel decreases the amount of waste produced, while soap production increases the amount of waste.

Question 7

Phosphoric acid is added to many popular beverages to give them a tart flavor.The formula of phosphoric acid is

Accepted Answer

A) H₃PO₄. 
B) H₄PO₃. 
C) H₂PO₄. 
D) HPO₄. 
A) H₃PO₄. 
B) H₄PO₃. 
C) H₂PO₄. 
D) HPO₄.

Question 8

Which of the following does NOT contribute to acid rain?

Accepted Answer

A) coal-burning power plants 
B) lightning 
C) volcanic eruptions 
D) All of the above contribute to acid rain. 
A) coal-burning power plants 
B) lightning 
C) volcanic eruptions 
D) All of the above contribute to acid rain.

Question 9

The Arrhenius theory explains why ammonia,NH₃,is basic,but the Bronsted-Lowry theory does not.

Accepted Answer

A) True 
 B)False

Question 10

Sulfuric acid is an excellent dehydrating agent and will remove water from the cells of skin.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is a hydroxide ion?

Accepted Answer

A) OH⁻ 
B) H⁺ 
C) H₃O⁺ 
D) H₂O⁻ 
A) OH⁻ 
B) H⁺ 
C) H₃O⁺ 
D) H₂O⁻

Question 12

When HCl is added to pure water,HCl molecules lose protons,while water molecules gain protons.In this reaction,HCl is a(n)

Accepted Answer

A) acid. 
B) base. 
C) salt. 
D) solvent. 
A) acid. 
B) base. 
C) salt. 
D) solvent.

Question 13

What is produced in an acid-base neutralization reaction?

Accepted Answer

A) an acid 
B) a base 
C) a salt and water 
D) an acid and water 
A) an acid 
B) a base 
C) a salt and water 
D) an acid and water

Question 14

The pH = -log[H⁺] for a solution.The pOH = -log[OH⁻] for a solution.The pH and pOH are related,and their sum is equal to 14 (pH + pOH = 14).If the concentration of a dilute solution of potassium hydroxide is 0.001 M,what is the pH of that solution?

Accepted Answer

A) 7 
B) 3 
C) 11 
D) 2 
A) 7 
B) 3 
C) 11 
D) 2

Question 15

A solution which has more H⁺ ions than OH⁻ ions will have a pH equal to 7.

Accepted Answer

A) True 
 B)False

Question 16

Hydrocyanic acid is classified as a weak acid in water.This means that it produces

Accepted Answer

A) no hydronium ions. 
B) a relatively small fraction of the maximum number of possible hydronium ions. 
C) a relatively large fraction of the maximum number of possible hydronium ions. 
D) 100% of the maximum number of possible hydronium ions. 
A) no hydronium ions. 
B) a relatively small fraction of the maximum number of possible hydronium ions. 
C) a relatively large fraction of the maximum number of possible hydronium ions. 
D) 100% of the maximum number of possible hydronium ions.

Question 17

Which substance has the lowest pH?

Accepted Answer

A) urine 
B) lemon juice 
C) unpolluted rainwater 
D) 4% NaOH 
A) urine 
B) lemon juice 
C) unpolluted rainwater 
D) 4% NaOH

Question 18

Many acid-base indicators can be extracted from fruit skins or flower petals.

Accepted Answer

A) True 
 B)False

Question 19

When added to water,which of the following would produce a base?

Accepted Answer

A) Li₂O 
B) CO₂ 
C) F₂ 
D) SO₃ 
A) Li₂O 
B) CO₂ 
C) F₂ 
D) SO₃

Question 20

Which is a weak base in aqueous solution?

Accepted Answer

A) NH₃ 
B) HF 
C) NaOH 
D) Ca(OH)₂ 
A) NH₃ 
B) HF 
C) NaOH 
D) Ca(OH)₂

Exam 7: Acids and Bases

Biodiesel fuels are more toxic to the environment than petroleum fuels are.

The cheapest base is ________.

A salt that can conduct electricity when it is dissolved in water is a(n)

Sodium bicarbonate is the common name for what compound?

Which of the following is a correct definition of a base that is not dependent upon the solvent?

In what way are the green chemistry production of biodiesel fuel and of soap different?

Phosphoric acid is added to many popular beverages to give them a tart flavor.The formula of phosphoric acid is

Which of the following does NOT contribute to acid rain?

The Arrhenius theory explains why ammonia,NH₃,is basic,but the Bronsted-Lowry theory does not.

Sulfuric acid is an excellent dehydrating agent and will remove water from the cells of skin.

Which of the following is a hydroxide ion?

When HCl is added to pure water,HCl molecules lose protons,while water molecules gain protons.In this reaction,HCl is a(n)

What is produced in an acid-base neutralization reaction?

The pH = -log[H⁺] for a solution.The pOH = -log[OH⁻] for a solution.The pH and pOH are related,and their sum is equal to 14 (pH + pOH = 14).If the concentration of a dilute solution of potassium hydroxide is 0.001 M,what is the pH of that solution?

A solution which has more H⁺ ions than OH⁻ ions will have a pH equal to 7.

Hydrocyanic acid is classified as a weak acid in water.This means that it produces

Which substance has the lowest pH?

Many acid-base indicators can be extracted from fruit skins or flower petals.

When added to water,which of the following would produce a base?

Which is a weak base in aqueous solution?

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