Worksheets2022 Acid/Base Review
Total questions: 42
Worksheet time: 4hrs 30mins
An increase in the amount of hydrogen ions in a solution ____ the pH.
raises
lowers
does not affect
doubles
A conjugate acid is an acid that forms when
the acid gains a proton.
a base loses a proton.
a base gains a proton.
an atom accepts an electron pair.
What is the conjugate base of the hydronium ion, H3O+?
OH–
H+
H2O
H3O2+
The conjugate acid of the chloride ion, Cl–, is
Cl2
H+
HCl
ClO-
In the following reaction, which substance is the conjugate base of HClO4?
HClO4 + H2O ->H3O+ + ClO4-
H2O
H3O+
ClO4-
Both (a) and (b)
What is the [OH–] in a sample of lime juice with a pH of 2.0?
1.0 x 10–2 M
1.0 x 10–7 M
1.0 x 10–10 M
1.0 x10–12 M
Neutral solutions have a pH of
pH of 2
pH of 0
pH of 7
A neutral solution does not have a pH
0.00020 M. FInd the pH of orange juice.
In the equation below, what is the Bronsted Lowry acid?
HCl + NH3 --> Cl- + NH4+
HCl
NH3
Cl-
NH4+
In the equation below, what is the Bronsted Lowry conjugate acid?
HCl + NH3 --> Cl- + NH4+
HCl
NH3
Cl-
NH4+
In the equation below, what is the Bronsted Lowry conjugate base?
HCl + NH3 --> Cl- + NH4+
HCl
NH3
Cl-
NH4+
Which of the following the correct name for H2SO4(aq)?
sulfurous acid
sulfuric acid
hydrosulfuric acid
hydrosulfurous acid
Which of the following is a neutralization reaction?
2Na + Cl2 → 2NaCl
CH4 + 2O2 → CO2 + 2H2O
HCl + KOH → KCl + H2O
CaCO3 → CO2 + CaO
According to the Brønsted-Lowry definition of acids, -
acids are chemicals that increase the pH
acids dissociate to give OH- ions
acids are proton (hydrogen ion) donors
acids have a pH greater than 7
In the equation below, what is the Bronsted Lowry acid?
HCl + NH3 --> Cl- + NH4+
HCl
NH3
Cl-
NH4+
In the following reaction, which substance is the conjugate base of HClO4?
HClO4 + H2O ->H3O+ + ClO4-
H2O
H3O+
ClO4-
Both (a) and (b)
What is the [OH–] in a sample of lime juice with a pH of 2.0?
1.0 x 10–2 M
1.0 x 10–7 M
1.0 x 10–10 M
1.0 x10–12 M
WHen 200 mL of 2.0 M NaOH(aq) is added to 500 mL of 1.0 M HCl(aq), the pH of the resulting mixture is closest to
1.0
3.0
7.0
13.0
If the pH of a solution is 4.0, what is the pOH?
4.0
10.0
1.0 x 10 -4
cannot be determined from the information
The pH of a solution is 8.43. What is the [H3O+]concentration?
3.7 x 10 -9
1.0 x 10-8.43
2.7 x 10-6
1.0 x 10-14
If the [H3O+] of a solution is 1 x 10-3 M, the pH is
11
-3
3
1
If the [OH-] of a solution is 2.7 x 10-4 M, the pOH of the solution is
10.44
1.00
3.57
-4.43
If the [H3O+] of a solution is 9.3 x 10-3 M, the pOH of the solution will be
2.03
1.02
11.97
12.98
Oranges have a [H3O+] of 1.7 x 10-2 M. Their pOH is
1.77
12.23
10.91
3.09
Ammonia has a pOH of 2. Ammonia is a(n) __________.
acid
base
neutral
metal
What is the [H+] if the pH is 4.0?
1.0 x 10-10 M
1.0 x 10-14 M
1.0 x 10-4 M
1.0 x 10-7 M
What is the pOH of a solution with [H+] = 1.24 x 10 -2?
1.91
1.61
12.09
12.39
What is the [OH-] if the [H+] is 1.0 x 10-3M?
1.0 x 10-3 M
1.0 x 10-14 M
6.02 x 10-23 M
1.0 x 10-11 M
What is the [OH-] if the pH is 4.9?
4.9 x 10-10 M
1.0 x 10-4 M
1.25 x 10-5 M
7.94 x 10-10 M
A 1.0 x 10-4 M solution of HNO3 has a [H+] concentration of: (Notice HNO3 has one H+.)
1.0 x 10-14
log 1.0 x 10-4
1.0 x 10-10
1.0 x 10-4
Why do we perform a titration?
To determine the concentration of an unknown solution
To see if a reaction will occur between an acid and base
To find the mass of an unknown acid
To find the molar mass of an unknown solution
To calculate the viscosity of the solution
If it takes 54 mL of 0.1 M NaOH to neutralize 125 mL of an HCl solution, what is the concentration of the HCl? (record you answer with the correct unit)
0.043 M
0.034 M
0.065 M
0.77 M
A 25.0 mL sample of HCl was titrated to the endpoint with 15.0 mL of 2.0 M NaOH. What is the molarity of HCl?
1.6 M HCl
0.03 M HCl
0.6 M HCl
1.2 M HCl
