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Chem 209 > Acid & Base > Flashcards

Acid & Base Flashcards

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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?

A

lactic

20
Q

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

A

buffer

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?

A

H2(SO)4

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
Q

When added to water, which of the following would produce an acid?

A

SO3

26
Q

All antacids are

A

bases

27
Q

According to Arrhenius, an acid and a base will react to give

A

a salt plus water

28
Q

most acids are strong acids

A

false

29
Q

Sodium bicarbonate is commonly known as

A

baking soda

30
Q

Hyperacidity means

A

too much acid

31
Q

A solution of toilet bowl cleaner has a pH of 9. The solution is

A

weakly basic

32
Q

Lemon juice has a sour taste and turns litmus to red. Lemon juice is

A

acidic

33
Q

Which is NOT a characteristic of bases?

A

A) produce hydroxide ions when added to water
B) turn litmus red*
C) react with acids to form salts
D) taste bitter

34
Q

When metal oxides react with water, the resulting solution is generally ________

A

basic

35
Q

Rain with which of the following pH of values would be considered to be acid rain?

A

A) 9.0
B) 9.5
C) 7
D) 1.5*

Chem 209 (11 decks)

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