Welcome!
The Topic For Today Is…
Acids and Bases
Definitions
Indicators
pH
Strong or
weak?
Reactions
200
200
200
200
200
400
400
400
400
400
600
600
600
600
600
800
800
800
800
800
1000
1000
1000
1000
1000
Bonus Question: 5000 pts
Definitions: 200
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Question:
What is the Arrhenius definition of an acid?
Answer
A substance that contributes Hydrogen ions
to water.
Definitions : 400
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Question:
What is the Arrhenius definition of a base?
Answer
A substance that contributes Hydroxide ions
to water.
Definitions : 600
• Question:
• What is the definition of a Bronsted-Lowry
base?
• Answer
• A substance that accepts a proton.
Definitions : 800
• Question:
• What is the definition of a Bronsted-Lowry
acid?
• Answer
• A substance that donates a proton.
Indicators: 1000
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Question:
What is an amphoteric substance?
Answer
A substance that has properties of an acid
and properties of a base.
• Examples: water, hydrogen carbonate ion
Indicators: 200
• Question:
• What type of substance turns red litmus
paper blue?
• Answer
• A base.
Indicators : 400
• Question:
• Based on your reading, what is the most
accurate method of obtaining a pH value?
• Answer
• pH meter
Indicators : 600
• Question:
• What is the color of universal indicator when
placed in pure water?
• Answer
• green
Indicators : 800
• Question:
• Give two reasons why pH paper would not be
useful in measuring the pH of blood.
• Answer
• The color of the blood would obscure the
color change on the paper
• The paper is precise enough to measure
blood pH.
Indicators : 1000
• Question:
• What is the color of universal indicator when
ammonia gas is bubbled through?
• Answer
• Dark blue
pH: 200
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Question:
A neutral solution has a pH of what value?
Answer
7
pH: 400
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Question:
Where do acids fall on the pH scale?
Answer
Below 7
pH: 600
• Question:
• Each integer on the pH scale represents a
_____ fold difference in the concentration of
hydrogen ions.
• Answer
• 10
pH: 800
• Question:
• The value of Kw , the self-ionization constant
of pure water is equal to [H3O+][OH-]. Its
numerical value is equal to
• Answer
• 1 x 10-14
pH: 1000
• Question:
• If the [OH-] is 1 x 10-8, the concentration of
hydronium ions in the same solution is
• Answer
• 1 x 10-6
Strong or Weak: 200
• Question:
• What distinguishes a strong acid from a weak
acid?
• Answer
• The extent to which dissociation of the acid
occurs.
Strong or Weak: 400
• Question:
• Would HNO3 be characterized as a strong or
weak acid?
• Answer
• Strong!
Strong or weak: 600
• Question:
• When looking at a chemical equation, how is
a strong acid distinguished from a weak acid.
• Answer
• Double vs. single arrows (→ vs. ↔)
Strong or weak: 800
• Question:
• Many strong bases are made from the
combination of what types of elements with
hydroxide?
• Answer
• Alkali and alkaline earth metals.
Strong or weak: 1000
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Question:
Is Na3PO4 considered an acid or a base?
Answer
Strong base
Reactions: 200
• Question:
• What kind of reaction takes place when a
base and acid combine to produce water and
salt?
• Answer
• neutralization
Reactions: 400
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Question:
Name the acid: H2SO4
Answer
Sulfuric acid
Reactions: 600
• Question:
• Predict the conjugate acid formed from the
following reaction:
HCl + H2O 
• Answer
• H3O+
Reactions: 800
• Question:
• Predict the conjugate base that forms as a
result of the following reaction:
NH4+ + H2O ↔
• Answer
• NH3
Reactions: 1000
• Question:
• A buffer solution can be made by varying the
concentrations of a weak acid and its______
• Answer
• Conjugate base
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Bonus Question:
5000 pts.
Question:
Give the pH of pancreatic juice.
Answer
…
7.9
Daily Double
Daily Double