wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

Acid Base Equilibrium

Total questions: 20

Worksheet time: 5hrs 0mins

Name
Class
Date
1.
Which is the weakest acid?
a)
HF
b)
HNO2
c)
CH3COOH
d)
HClO
2.
Which of the following is a conjugate acid/base pair?
a)
HCl/OCl-
b)
H2SO4/SO42-
c)
NH4+/NH3
d)
H3O+/OH-
3.
Calculate the pH of a 0.47M NH3 (Kb = 1.8 x 10-5) solution.
a)
2.54
b)
8.93
c)
5.07
d)
11.46
4.
The pH of a solution at 25ₒC in which [OH-] = 3.9 x 10-5M is:
a)
4.41
b)
3.90
c)
9.59
d)
4.80
5.
Calculate the [H+] in a solution that has a pH of 2.73.
a)
5.4 x 10-12 M
b)
1.9 x 10-3 M
c)
2.7 M
d)
11.3 M
6.
The pH at the equivalence point of the titration of a strong acid with a strong base is:
a)
3.9
b)
4.5
c)
7.0
d)
8.2
7.
Which of the following is the conjugate acid of HCO3-1?
a)
H2CO3
b)
CO3-2
c)
H2CO3-1
d)
CO3-1
8.

Phenol, C6H5OH, has a Ka =1.0 x 10-10. What is the pH of a 0.010 M solution of phenol?

a)

between 3-7

b)

10

c)

2

d)

between 7-10

e)

7

9.
Calculate the [H+] in a solution that has a pH of 2.73.
a)
5.4 x 10-12 M
b)
1.9 x 10-3 M
c)
2.7 M
d)
11.3 M
10.

What is the main purpose of acid-base titrations?

a)

To test if reactants react.

b)

To calculate the concentration of unknown analyte.

c)

To calculate the concentration of known analyte.

d)

To test quality of reactants.

11.
what is the reading on this burette?
a)
4.40mL
b)
3.50mL
c)
3.60mL
d)
4.50mL
12.

Which point on the titration curve corresponds to the point at which the moles of the added strong base are equal to the moles of the weak acid initially present?

a)

Q

b)

R

c)

S

d)

T

13.
A neutralization reaction will (almost) always produce...
a)
water & salt
b)
water
c)
salt
d)
water & carbon
14.

For this reaction :


HA(aq) + H2O(l) ⇌ H3O+(aq) + A-(aq)


Which one can act as an acid ?

a)

HA(aq) and A-(aq)

b)

H2O(l) and H3O+(aq)

c)

HA(aq) and H3O+(aq)

d)

H2O(l) and A-(aq)

15.

dissociation of weak acid, HA, is represented by following equation :


HA(aq) + H2O(l) ⇌ H3O+(aq) + A-(aq)


The equilibrium constant for this reaction is represented by Ka . Which of the following equation represents expression of equilibrium constant, Ka?

a)
b)
c)
d)
16.
If an acid is combined with a base of equal strength, the result will most likely be
a)
a neutral solution.
b)
a stronger acid.
c)
impossible to tell without testing the pH.
d)
a stronger base
17.
What is the pH of a solution if [OH-] = 1.0 x 10-5M?
a)
5.00
b)
7.00
c)
9.00
d)
11.00
18.
If a 25 mL sample of HCl is neutralized by 21.3 mL of 0.78 M Mg(OH)2, what is the molarity of HCl? The balanced equation is:
2HCl + Mg(OH)2 --> MgCl2 + 2HOH
a)
0.00033 M HCl
b)
0.0013 M HCl
c)
0.35 M HCl
d)
1.3 M HCl
19.
Bases are substances that ...
a)
accept hydrogen atoms
b)
reject hydrogen atoms
20.
What is the pOH of a solution where the [OH-] is 7.3 x 10-2 M?
a)
-1.14
b)
2.0
c)
1.14
d)
7.3

Similar Resources on Wayground

check your chemistry vocalbulary

15 questions

check your chemistry vocalbulary

quiz

Worksheet

•

9th - 12th Grade

Periodic table and Chemical Bonds

20 questions

Periodic table and Chemical Bonds

quiz

Worksheet

•

9th - 12th Grade

Ulangan harian buffer dan hidrolisis

15 questions

Ulangan harian buffer dan hidrolisis

quiz

Worksheet

•

11th Grade

Konsep asam basa

15 questions

Konsep asam basa

quiz

Worksheet

•

11th Grade

Jadual Berkala Unsur

20 questions

Jadual Berkala Unsur

quiz

Worksheet

•

KG - University

Unit 1 Test Review

20 questions

Unit 1 Test Review

quiz

Worksheet

•

9th - 12th Grade

UH Larutan Elektrolit dan Nonelektrolit

20 questions

UH Larutan Elektrolit dan Nonelektrolit

quiz

Worksheet

•

9th - 12th Grade

Chapter 4 : Chemical Bonding (Molecular Geometry)

20 questions

Chapter 4 : Chemical Bonding (Molecular Geometry)

quiz

Worksheet

•

12th Grade - University