Deck 14: Acids and Bases

Question 1

A conjugate acid-base pair are two substances related to each other by the transfer of a proton.

Answer 1

True

Question 2

An Arrhenius base is a proton acceptor.

Answer 2

False

Question 3

The products of a neutralization reaction are carbon dioxide and water.

Answer 3

False

Question 4

Acids have a bitter taste.

Question 5

The conjugate base to HSO₄^- is SO₄^2-.

Question 6

A Bronsted-Lowry acid is a proton donor.

Question 7

Acids produce H⁺ ions in solution.

Question 8

The salt that forms due to neutralization of phosphoric acid by calcium hydroxide has the formula Ca₃P₂.

Question 9

NH₄⁺ and NH₃ are considered a conjugate acid-base conjugate pair.

Question 10

The main component of stomach acid is sulfuric acid.

Question 11

Bases have a bitter taste.

Question 12

Sodium hydroxide is often used in the manufacturing of soap.

Question 13

Bases feel slippery.

Question 14

Acids turn litmus paper blue.

Question 15

Bases feel slippery because they react with oils on your skin to form soap-like substances.

Question 16

When a metal reacts with an acid it produces salt and water.

Question 17

The main component of vinegar is acetic acid.

Question 18

H₂SO₃ and H₂SO₄ are considered a conjugate acid-base pair.

Question 19

The sour taste of bases warns humans against eating poisonous alkaloids found in some plants.

Question 20

H⁺ is called the hydronium ion.

Question 21

A solution with a concentration of 0.000 000 1 M HCl would be an acidic solution.

Question 22

The equation HCl (aq)+ H₂O (l)↔ H₃O⁺ (aq)+ Cl^- (aq)properly depicts the behavior of hydrochloric acid in water.

Question 23

A neutral solution does not contain any H⁺ or OH⁻.

Question 24

The ion product constant for water (K_w)is best stated as K_w = [H₂O] [H⁺].

Question 25

Water always acts as an acid in reactions.

Question 26

A strong acid must also be a strong electrolyte.

Question 27

In a titration,the indicator is used to signal when the endpoint has been reached.

Question 28

A weak acid is a dilute acid that is not very powerful.

Question 29

Since diprotic acids such as H₂CO₃ have two ionizable protons,they will always behave as strong acids compared to monoprotic acids.

Question 30

The pH of 0.001 M HCl is 3.0.

Question 31

A 100 mL sample of 4.0 M H₂SO₄ could be neutralized by 100 mL of 4.0 M NH₃.

Question 32

A strong acid is one that is very concentrated.

Question 33

A 1.0 M [H₃O⁺] solution of a strong acid would have a pH equal to zero.

Question 34

In general,the stronger the acid,the weaker is its conjugate base.

Question 35

A solution that has a pH of 8.5 is considered a weak base.

Question 36

A pH of 7 is equivalent to a pOH of 7.

Question 37

A strong acid is one that completely dissociates into ions in solution.

Question 38

A solution of pH 2 contains ten times more H₃O⁺ than a solution of pH 3.

Question 39

Aluminum is one of the few metals that dissolves in a strong base.

Question 40

The pH of a 0.0001 M NaOH solution is 4.

Question 41

The Bronsted-Lowry definition of a base is:

A)a proton donor.
B)a proton acceptor.
C)produces H⁺ in solution.
D)produces OH⁻ in solution.
E)none of the above

Question 42

A buffer resists a change in pH by being able to react with an acid or a base.

Question 43

The Bronsted-Lowry definition of an acid is:

A)a proton donor.
B)a proton acceptor.
C)produces H⁺ in solution.
D)produces OH⁻ in solution.
E)none of the above

Question 44

The Arrhenius definition of an acid is:

A)a proton donor.
B)a proton acceptor.
C)produces H⁺ in solution.
D)produces OH⁻ in solution.
E)none of the above

Question 45

The burning of fossil fuels produces nitrogen oxides and sulfur oxides which can react to form acid rain (nitric and sulfuric acids).

Question 46

Which of the following is NOT true?

A)The Bronsted-Lowry Model applies to a wider range of acid-base phenomena than does the Arrhenius Model.
B)The Arrhenius Model of acids and bases was developed before the Bronsted-Lowry Model.
C)The Bronsted-Lowry Model can apply to bases that do not contain hydroxide ions.
D)The Arrhenius Model of acids and bases applies toward substances that are nonaqueous.
E)none of the above

Question 47

What is the conjugate acid of OH⁻?

A) O^2-
B) H₂O
C)NaOH
D)OH⁻
E)none of the above

Question 48

Which among the following acids is commonly used for etching and frosting glass?

A)hydrochloric acid
B)nitric acid
C)hydrofluoric acid
D)hydrobromic acid
E)All of the above are used.

Question 49

Which of the following is NOT a property of acids?

A)Acids have a slippery feel.
B)Acids have a sour taste.
C)Acids turn litmus paper red.
D)Acids dissolve many metals.
E)All of the above are properties of acids.

Question 50

Which of the following statements about acids are TRUE?
1.An acid is used in car batteries.
2.A component of vinegar is an acid.
3.Acids are used for cleaning metals.

A)1 and 2 only
B)2 and 3 only
C)1 and 3 only
D)All of 1,2,and 3
E)Neither 1,2,or 3

Question 51

A solution that has a pH of 10 would also have a pOH of 4.

Question 52

In examining the formula for acetic acid,HC₂H₃O₂,the ionizable hydrogen atom(s)is/are:

A)the H on the left.
B)one of the H's on the right-side.
C)all of the H's on the right-side.
D)all four H's.
E)none of the above.

Question 53

Which of the following is the active ingredient of baking soda?

A)NH₃
B)NaHCO₃
C)KOH
D)NaOH
E)none of the above

Question 54

Carboxylic acids can be found in:

A)grapes.
B)apples.
C)lemons.
D)all of the above
E)none of these

Question 55

Which of the following is NOT a property of bases?

A)Bases have a slippery feel.
B)Bases have a bitter taste.
C)Bases turn litmus paper blue.
D)Bases dissolve many metals.
E)All of the above are properties of bases.

Question 56

Which of the following statements about a base are TRUE?
1.Bases are used in the manufacturing of soap.
2.Bases have a sour taste.
3.Fertilizer manufacture and cotton processing use bases.

A)1 and 2 only
B)1 and 3 only
C)2 and 3 only
D)All of 1,2,and 3
E)Neither 1,2,or 3

Question 57

Which of the following common bases is commonly used for manufacturing fertilizer?

A)NH₃
B)NaHCO₃
C)KOH
D)NaOH
E)all of the above

Question 58

Rain is naturally somewhat acidic because of atmospheric carbon dioxide.

Question 59

Which of the following acids is commonly used for manufacturing fertilizer?

A)HCl
B)HNO₃
C)HF
D)HBr
E)all of the above

Question 60

A simple buffer can be prepared by mixing significant amounts of a weak acid and its conjugate base.

Question 61

In the following reaction: NH₄⁺ (aq)+ H₂O (aq)→ NH₃ (aq)+ H₃O⁺ (aq)

A)NH₄⁺ is an acid and H₂O is its conjugate base.
B)H₂O is a base and NH₃ is its conjugate acid.
C)NH₄⁺ is an acid and H₃O⁺ is its conjugate base.
D)H₂O is a base and H₃O⁺ is its conjugate acid.
E)NH₄⁺ is a base and H₂O is its conjugate acid.

Question 62

In the following reaction: HCO₃^- (aq)+ H₂O (aq)→ H₂CO₃ (aq)+ OH^- (aq)

A)HCO₃^- is an acid and H₂CO₃ is its conjugate base.
B)H₂O is an acid and OH^- is its conjugate base.
C)HCO₃^- is an acid and OH^- is its conjugate base.
D)H₂O is an acid and H₂CO₃ is its conjugate base.
E)H₂O is an acid and HCO₃^- is its conjugate base.

Question 63

Which of the following acids is a diprotic,weak acid?

A)sulfuric acid
B)phosphoric acid
C)hydrobromic acid
D)carbonic acid
E)none of the above

Question 64

When an acid reacts with a metal,what is one of the usual products?

A)water
B)salt
C)carbon dioxide
D)hydrogen gas
E)none of the above

Question 65

What are the products of a neutralization reaction?

A)salt and carbon dioxide
B)carbon dioxide and water
C)water and salt
D)oil and water
E)none of the above

Question 66

A neutralization reaction between KOH (aq)and H₂SO₄ (aq)would give which two products?

A)H₂O (l)and H₂S (g)
B)H₂O (l)and KSO₄ (aq)
C)H₂O (l)and K₂SO₄ (aq)
D)SO₂ (g)and KH₂ (g)
E)none of the above

Question 67

Exactly 17.0 mL of a H₂SO₄ solution was required to neutralize 45.0 mL of 0.235 M NaOH.What was the concentration of the H₂SO₄ solution?
Given: H₂SO₄ (aq)+ 2NaOH (aq)→ 2H₂O (l)+ Na₂SO₄ (aq)

A)5.63 M
B)0.622 M
C)0.00529 M
D)0.311 M
E)none of the above

Question 68

Which of the following statements about water are TRUE?

A)Water can act as an acid.
B)Water can act as a base.
C)The conjugate base of water is OH^-.
D)The conjugate acid of water is H₃O⁺.
E)All of the above are true.

Question 69

Pure water cannot conduct electricity so why do we have to be careful with electrical appliances near water?

A)OSHA regulations
B)Water can be broken down by electricity.
C)Water always has some ions dissolved in it.
D)Water dissociates fully into its ions.
E)none of the above

Question 70

A 25.0 mL sample of 0.105 M HCl was titrated with 31.5 mL of NaOH.What is the concentration of the NaOH?

A)0.0833 M
B)0.132 M
C)0.105 M
D)0.075 M
E)none of the above

Question 71

What is the conjugate base of H₂O?

A) O^2-
B) H₃O⁺
C)NaOH
D)OH⁻
E)none of the above

Question 72

Which of the following acids is diprotic?

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

Question 73

A substance that acts as an acid OR a base is called:

A)isoprotic.
B)a salt.
C)amphoteric.
D)hydrophillic.
E)none of the above

Question 74

A 35.0 mL sample of 0.225 M HBr was titrated with 42.3 mL of KOH.What is the concentration of the KOH?

A)0.157 M
B)0.303 M
C)0.272 M
D)0.186 M
E)none of the above

Question 75

A neutralization reaction between an acid and sodium hydroxide formed water and the salt named sodium sulfate.What was the formula of the acid that was neutralized?

A)H₂S
B)H₂SO₄
C)HCl
D)Na₂SO₄
E)none of the above

Question 76

Which of the following is a weak base?

A)calcium hydroxide
B)sodium fluoride
C)potassium hydroxide
D)ammonia
E)none of the above

Question 77

In which solution is the [H₃O⁺] less than 0.250 M?

A)0.250 M HC₂H₃O₂ (aq)
B)0.250 M HF (aq)
C)0.250 M HCO₂ (aq)
D)all of these
E)none of these

Question 78

Which of the following is NOT an acid-base conjugate pair?

A)H₂CO₃ and HCO₃^-
B)H₂O and OH^-
C)H₂S and OH^-
D)NH₄⁺ and NH₃
E)none of the above

Question 79

Which of the following acids is a monoprotic,strong acid?

A)sulfuric acid
B)phosphoric acid
C)hydrobromic acid
D)carbonic acid
E)none of the above

Question 80

A 0.10 M solution of an electrolyte has a pH of 4.5.The electrolyte is:

A)a strong acid.
B)a strong base.
C)a weak acid.
D)a weak base.
E)none of the above