Acid & Base Flashcards

1
Q

Many medicines have a bitter taste which manufacturers attempt to disguise. Many medicines are probably

A

bases

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2
Q

Which substance has the lowest pH?

A

A) lemon juice*
B) blood
C) unpolluted rainwater
D) NaOH (4% solution)

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3
Q

Sodium bicarbonate is an old standby antacid. It is not recommended for persons suffering from high blood pressure because

A

of the presence of sodium ion

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4
Q

Sodium bicarbonate is the common name for what compound?

A

sodium hydrogen carbonate

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5
Q

A common name for hydrochloric acid is

A

muriatic acid

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6
Q

Which of the following is a hydroxide ion?

A

A) H+
B) H3O+
C) OH-*
D) H2O-

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7
Q

Which is a weak base in aqueous solution?

A

A) HCN
B) KOH
C) NaOH
D) NH3*

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8
Q

an acid is strong if

A

ionizes completely in water

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9
Q

Which of the following is an example of a nonmetal oxide?

A

A) K2O
B) CO2*
C) NaOH
D) H2SO4

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10
Q

A solution with a pH of 10 has a hydronium ion concentration of

A

10-10 mol/L.

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11
Q

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

A

H3PO4

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12
Q

A solution of toilet bowl cleaner has a pH of 13. The solution is

A

strongly basic

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13
Q

Which of the following is NOT true of the Arrhenius theory?

A

Acids are defined as compounds that produce OH- ions in water solution

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14
Q

Ammonia is classified as a weak base in water. This means that it produces

A

a relatively small fraction of the maximum number of possible hydroxide ions.

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15
Q

The pH of rain collected on a remote island in the Pacific is assumed to be unaffected by human pollution. The pH of the rainwater will be

A

less than 7

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16
Q

A compound that changes color when it is placed into an acidic or a basic solution is

A

an acid-base indicator

17
Q

Sodium hydroxide is classified as a strong base in water. This means that it produces

A

100% of the maximum number of possible hydroxide ions.

18
Q

Most of the sulfuric acid produced in this country is used for

A

manufacturing fertilizer

19
Q

Which of the following acids is responsible for the sour taste of yogurt?

20
Q

A mixture of a weak acid and its conjugate base forms a(n)

21
Q

Acid rain is caused by acidic pollutants in the air. Which of the following pollutants does NOT contribute to acid rain?

A

ammonia, NH3

22
Q

All of the following are strong acids EXCEPT

A

A) acetic acid.*
B) sulfuric acid.
C) nitric acid.
D) hydrochloric acid

23
Q

Sulfuric acid is the leading chemical produced and used industrially. What is the formula for sulfuric acid?

24
Q

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

A

a relatively small fraction of the maximum number of possible hydronium ions

25
When added to water, which of the following would produce an acid?
SO3
26
All antacids are
bases
27
According to Arrhenius, an acid and a base will react to give
a salt plus water
28
most acids are strong acids
false
29
Sodium bicarbonate is commonly known as
baking soda
30
Hyperacidity means
too much acid
31
A solution of toilet bowl cleaner has a pH of 9. The solution is
weakly basic
32
Lemon juice has a sour taste and turns litmus to red. Lemon juice is
acidic
33
Which is NOT a characteristic of bases?
A) produce hydroxide ions when added to water B) turn litmus red* C) react with acids to form salts D) taste bitter
34
When metal oxides react with water, the resulting solution is generally ________
basic
35
Rain with which of the following pH of values would be considered to be acid rain?
A) 9.0 B) 9.5 C) 7 D) 1.5*