Which of the following is NOT a property of acids?
answer
Acids have a slippery feel.
question
Which of the following statements about acids are TRUE?
1. An acid is used in car batteries.
2. The active ingredient of vinegar is an acid.
3. Acids are used for cleaning metals.
answer
All of 1, 2, and 3
question
Carboxylic acids can be found in
answer
all of the above
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Which among the following acids is commonly used for etching and frosting glass?
answer
Hydrofluoric acid
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Which of the following acids is commonly used for manufacturing fertilizer?
answer
HNO3
question
Which of the following is NOT a property of bases?
answer
Bases dissolve many metals.
question
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.
answer
1 and 3 only
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Which of the following common bases is commonly used for manufacturing fertilizer?
answer
NH3
question
Which of the following is the active ingredient of baking soda?
answer
NaHCO3
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The Arrhenius definition of an acid is:
answer
produces H⁺ in solution.
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The Bronsted-Lowry definition of a base is:
answer
a proton acceptor.
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The Bronsted-Lowry definition of an acid is:
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a proton donor.
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Which of the following is NOT true?
answer
The Arrhenius Model of acids and bases applies toward substances that are nonaqueous.
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In examining the formula for acetic acid, HC2H3O2, the ionizable hydrogen atom(s) is/are
answer
the H on the left.
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Which of the following is NOT an acid-base conjugate pair?
answer
H2S and OH-
question
In the following reaction:
HCO3- (aq) + H2O (aq) → H2CO3 (aq) + OH- (aq)
answer
H2O is an acid and OH- is its conjugate base.
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In the following reaction: NH4+ (aq) + H2O (aq) → NH3 (aq) + H3O+ (aq)
answer
H2O is a base and H3O+ is its conjugate acid.
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What is the conjugate acid of OH⁻?
answer
H2O
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What is the conjugate base of H2O?
answer
OH⁻
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A substance that acts as an acid or a base is called
answer
amphoteric.
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What are the products of a neutralization reaction?
answer
water and salt
question
When an acid reacts with a metal, what is one of the usual products?
answer
hydrogen gas
question
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?
answer
H2SO4
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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?
answer
0.0833 M
question
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?
answer
0.186 M
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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?
answer
0.311 M
question
Pure water cannot conduct electricity so why do we have to be careful with electrical appliances near water?
answer
Water always has some ions dissolved in it.
question
Which of the following acids is diprotic?
answer
H2SO4
question
Which of the following acids is a diprotic, weak acid?
answer
carbonic acid
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Which of the following acids is a monoprotic, strong acid?
answer
hydrobromic acid
question
A 0.10 M solution of an electrolyte has a pH of 4.5. The electrolyte is:
answer
a weak acid.
question
What is the concentration of H⁺ in 2.0 M acetic acid, HC2H3O2?
answer
< 2.0 M
question
What is the concentration of H⁺ in 0.50 M hydroiodic acid?
answer
0.50 M
question
Which of the following is a weak base?
answer
ammonia
question
Ammonia (NH3) ionizes in water to form a basic solution. What is the concentration of OH- ions in a
answer
< 0.75 M
question
Consider a 1.6 × 10-3 M solution of HNO3. Which of the following statements is NOT true?
answer
This solution has a pH of 11.20.
question
Substances that can act both as an acid and as a base are called:
answer
amphoteric.
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What is the concentration of the hydronium ions in a neutral solution?
answer
1.0 × 10-7 M
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What is the concentration of the hydroxide ions in an acidic solution?
answer
< 1.0× 10-7 M
question
What is the concentration of the hydronium ions in an acidic solution?
answer
> 1.0 × 10-7 M
question
What is the value of the ion product constant for water (Kw)?
answer
1.0 × 10-14
question
What is the concentration of the hydroxide ion given that the concentration of the hydronium ion is
1.5 × 10-5 M?
answer
6.7 × 10-10 M
question
What is the concentration of hydronium ions in a solution given that the concentration of hydroxide ions is 2.31 × 10-4 M?
answer
4.33 × 10-11 M
question
Which solution below has the highest concentration of hydroxide ions?
answer
pH = 12.49
question
The pH of a solution is 5.00. Which of the following is TRUE about the solution?
answer
Its [H3O+] is 1.0 × 10-5 M
question
In order for a solution to be acidic
answer
[H3O+] > [OH-]
question
In order for a solution to be basic,
answer
[H3O+] < [OH-]
question
In a solution that has a pH = 7.0,
answer
[H3O+] = [OH-]
question
A solution at 25°C has a hydrogen ion concentration of 2.6 × 10-5 M. Which of the following is TRUE?
answer
[H3O+] > [OH-]
question
Which solution below is considered to have basic character?
answer
pOH = 4
question
What is the pH of a solution that has a H⁺ concentration equal to 1.76 × 10-5 M?
answer
4.77
question
If the pH of an aqueous solution changed from 9.10 to 4.67, what happened to the hydronium ion concentration?
answer
It increased.
question
What is the pOH of a solution that has a OH- concentration equal to1.36 × 10-10 M?
answer
9.89
question
What is the [H⁺] in a solution that has a pH of 3.35?
answer
4.5 × 10-4 M
question
What is the [OH-] in a solution that has a pOH of 9.65?
answer
2.2 × 10-10 M
question
Which of the following is TRUE of alkaloid compounds?
answer
All of the above are true.
question
A buffer solution is all of the following EXCEPT:
answer
a solution that regulates pH by the addition of a strong acid or base.
question
Which of the following statements are TRUE of buffer solutions?
1. A buffer solution can be made by mixing equal concentrations of
acetic acid and sodium acetate.
2. A buffer solution can be made by mixing equal concentrations of
hydrochloric acid and sodium chloride.
3. A buffer solution resists changes in pH when small quantities of acid
or base are added.
answer
1 and 3 only
question
Which combination below will be a buffer solution?
answer
HC2H3O2 and NaC2H3O2
question
Which of the following contributes to acid rain?
answer
The reaction of nonmetal oxides with water.
question
Acid rain legislation targeted the release of which compound by industry?
answer
SO2
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