WorksheetsAcid Titrations and pH
Total questions: 25
Worksheet time: 20mins
Name
Class
Date
1.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
2.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
3.
What is the hydrogen ion concentration in a solution with pOH = 3.3?
a)
10.7 M
b)
0.00050 M
c)
0.000025 M
d)
2.0 x 10-11 M
4.
The hydroxide ion is a soft drink is 5.00 x 10-12 M. Find the pH.
a)
0.002
b)
2.7
c)
11.3
d)
14
5.
The [H+] is orange juice is 0.00020 M. FInd the pH of orange juice.
a)
1
b)
3.7
c)
10.3
d)
13
6.
HBr is an example of a(n)
a)
Acid
b)
Base
c)
Neutral
7.
Ca(OH)2 is an example of a(n)
a)
Acid
b)
Base
c)
Neutral
8.
A solution with a pH of 8.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
9.
What is the long graduated piece of equipment called?
a)
Pipette
b)
Tube
c)
Burette
d)
Measuring Cylinder
10.
what is the reading on this burette?
a)
4.40mL
b)
3.50mL
c)
3.60mL
d)
4.50mL
11.
The following neutralization reaction occurs in the classroom.
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?
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?
a)
0.8M
b)
1.2M
c)
12.5M
12.
In a titration, 15.5 g of oxalic acid was dissolved in a flask and neutralized with 31.2 mL of NaOH. Determine the molarity of the NaOH.
Hint: Primary standards (like oxalic acid, here) incude water in their formula. As a result, they do not absorb atmospheric water. Oxalic acid has the chemcial formula: H2C2O4⋅2H2O (so be sure to include the 2 extra water molecules).
Hint: Primary standards (like oxalic acid, here) incude water in their formula. As a result, they do not absorb atmospheric water. Oxalic acid has the chemcial formula: H2C2O4⋅2H2O (so be sure to include the 2 extra water molecules).
a)
7.88 mol/L
b)
8.33 M
c)
3.55 M
d)
0.333 mol/L
13.
I have 25mL of 1M HCl which neutralizes 20mL of NaOH. What is the concentration of the NaOH?
a)
0.8 M
b)
1 M
c)
1.25 M
14.
The following neutralization reaction occurs in the classroom.
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 15.0mL of acid neutralized?
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 15.0mL of acid neutralized?
a)
0.8M
b)
1.2M
c)
12.5M
15.
What is the endpoint of a titration
a)
Where the amount of acid and base are equal as shown by a colour change
b)
Where there is no base
c)
When the volume of base in the burette is used up
d)
When there is no acid
16.
HCl + NaOH →
a)
NaH + ClOH
b)
NaCl + H2
c)
NaCl + H2O
d)
NaCl + Cl2
17.
What is the volume in this burette?
a)
24. mL
b)
24.20 mL
c)
24.200 mL
d)
24.2mL
18.
A 0.95 M solution of 10.0 mL Al(OH)3 is neutralized using a 2 M solution of H2SO4. How much H2SO4 was needed?
3H2SO4 + 2Al(OH)3 --> 6H2O + 1Al2(SO4)3
3H2SO4 + 2Al(OH)3 --> 6H2O + 1Al2(SO4)3
a)
0.1 mL
b)
7 mL
c)
5 mL
d)
0.2 mL
19.
What are the products of the following reaction?
H2SO4 + KOH -->
H2SO4 + KOH -->
a)
HK + HSO4
b)
H2O + KSO4
c)
H2O + K2SO4
d)
H2 + K2SO4
20.
I am titrating 1M HCl with 1M NaOH. I have 25mL of HCl. How much NaOH will I need?
a)
2.5mL
b)
5mL
c)
25mL
d)
50mL
21.
What is the pOH of a solution that has a pH of 2?
a)
10
b)
12
c)
14
d)
1
22.
The hydroxide ion is a soft drink is 1.00 x 10-12 M. Find the pH.
a)
12
b)
2
c)
11
d)
14
23.
1) 0.04 M NaOH is load into a buret - initial reading is 4.5 mL
2) 60 mL of unknown monoprotic acid, HA, is placed under the buret.
3) 2 drops of phenolphthalein is added to the acid.
4) The base is slowly added to the acid until it turns pink. - final reading from the buret is 34.6 mL.
WHAT IS THE MOLARITY OF THE ACID?
a)
0.04 M
b)
0.0012 M
c)
0.02 M
d)
30.1 M
24.
1) 0.9 M NaOH is load into a buret - initial reading is 2.6 mL
2) 100 mL of unknown monoprotic acid is placed under the buret.
3) 2 drops of phenolphthalein is added to the acid.
4) The base is slowly added to the acid until it turns pink. - final reading from the buret is 23.6 mL.
WHAT IS THE MOLARITY OF THE ACID?
a)
0.9 M
b)
0.0189 M
c)
0.189 M
d)
21 M
25.
If 100 mL of 0.1 M solution is diluted to 550 mL what is the concentration?
a)
0.02 M
b)
0.04 M
c)
0.1 M
d)
0.003 M
100 %
