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WorksheetsAcids, Bases, Salts Review
Total questions: 50
Worksheet time: 2hrs 40mins
Which of the following values would represent the pH of a strong base?
1
8
7
13
Which of the following values would represent the pH of a strong acid?
1
6
7
13
What happens when an acid and a base mix?
Optimization of Ions
Equalization of Charges
Neutralization Reaction
Law of Neutral Hydrogen Ions
What range of values on the pH scale represent solutions with a higher ratio of hydronium (H3O+) ions?
0-14
below 7
7
above 7
What range of values on the pH scale represent solutions with a higher ratio of hydroxide (OH-) ions?
below 7
7
above 7
0-14
When found in food, acids often taste ________.
Sour
Bitter
Salty
Slippery
When found in food, bases often taste _______.
Sour
Bitter
Salty
Soggy
When you place blue litmus paper into an unknown clear solution, the blue litmus paper turns red.
Which of the following represents the most logical conclusion?
The substance has a pH value of "2".
The substance is a base.
The substance has a pH value of "7".
The substance is acidic.
Ocean water has a pH value near "8". It would be classified as...
slightly acidic
a strong base
a neutral substance
slightly basic (alkaline)
Four solutions are tested and found to have the following pH values. Which of these substances would be considered the weakest acid?
Lemon Juice - pH=2
Apple Juice - pH=4.5
Shower Cleaner - pH=5.5
Hydrogen Peroxide - pH=7
Many cleaning solutions are bases. Which of the following is a common property among basic (alkaline) solutions?
slippery feel
white color
salty taste
sour taste
The products of a neutralization reaction are usually...
salt and water
an acid and a base
a neutral solution
carbon dioxide and oxygen
Which indicator is blue in a solution that has a pH of 5.6?
bromcresol green
bromthymol blue
thymol blue
methyl orange
Based on the results of testing colorless solutions with indicators, which solution is most acidic?
solution where bromthymol blue is blue
solution where bromcresol green is blue
solution where phenolphthalein is pink
solution where methyl orange is red
Which indicator is yellow in a solution with a pH of 9.8?
methyl orange
bromthymol blue
bromcresol green
thymol blue
In which solution will thymol blue indicator appear blue?
0.1 M CH3COOH
0.1 M KOH
0.1 M HCl
0.1 M H2SO4
According to reference table M, what is the color of the indicator methyl orange in a solution that has a pH of 2?
blue
yellow
orange
red
Three samples of the same solution are tested, each with a different indicator. All three indicators, bromthymol blue, thymol blue and bromcresol green appear blue if the pH of the solution is
4.7
6.0
7.8
9.9
Zn(OH)2 + HNO3 ---> H2O + Zn(NO3)2
Complete the following reaction:
HCl + Mg(OH)2 -->
MgCl2 + H2O
Mg +H2O
MgCl2 + H2
MgCl2 + H2O + CO2
Complete the following reaction:
H3PO4 + NaOH -->
Na3PO4 + H2O
Na +H2O
Na3PO4 + H2
Na3PO4 + H2O + CO2
What does pH measure?
Concentration of H+
Concentration of OH-
The amount of liquid in the test tube.
The Concentration of H3O+
Neutral solutions have a pH of
pH of 2
pH of 0
pH of 7
A neutral solution does not have a pH
What is true when acids and bases neutralize each other.
The concentration of H+ and OH- is the same
Salt Water is produced
[H+] = [OH-]
[H+] > [OH-]
A base is a substance
That releases OH- ions when dissolved in water
That releases H+ ions when dissolved in water
Does not release any ions when dissolved in water
None of the above
Phenolphthalein in acidic solution is
Colorless
turns pink
turns Yellow
turns green
Identify the Acid in the above reaction.
The table shows the molar concentrations of hydronium ions in four different solutions. Which solution has the highest pH?
A
B
C
D
A solution with a pH of 4.0 has a hydronium ion concentration a thousand times greater than a solution with a pH of
1.0
2.0
6.0
7.0
Compared to a solution with a pH value of 8, a solution with a hundred times lower hydronium ion concentration has a pH value of
6
7
9
10
As the pH of a solution changes from 3 to 4, the concentration of hydronium ions
decreases by a factor of 1
decreases by a factor of 10
increases by a factor of 10
increases by a factor of 1
As the pH of a solution is changed from 13 to 11, the concentration of hydronium ions
decreases by a factor of 100
decreases by a factor of 20
increases by a factor of 20
increases by a factor of 100
What is the main purpose of acid-base titrations?
To test if reactants react.
To calculate the concentration of unknown acid or base.
To test quality of reactants.
HCl + KOH --> H2O + KCl
If a student uses 25.0 mL of a 0.5M solution of KOH, what is the molarity of the acid if the is 15.0mL of acid neutralized?
