Lec: Neutralization of
Acids and Bases
NaOH + HCl
What type of chemical is NaOH?
NaOH + HCl
(Base)
Answer: A Base
NaOH + HCl
(Base)
What type of chemical is HCl?
NaOH + HCl
(Base) (Acid)
Answer: An Acid
NaOH + HCl
(Base) (Acid)
NaCl + H2O
What is NaCl?
NaOH + HCl
(Base) (Acid)
NaCl + H2O
(Salt)
Answer: Salt
NaOH + HCl
(Base) (Acid)
NaCl + H2O
(Salt)
What is H2O?
NaOH + HCl
(Base) (Acid)
NaCl + H2O
(Salt) (Water)
Answer: Water
When you add an acid to a base
you make a salt water solution.
Neutralization is the process
when an acid is added to a base.
Each particle of an acid can
neutralize a base particle.
To neutralize acids and bases the
following equation can be used.
• Concentration A x Volume A=
Concentration B x Volume B
You have 500 ml of an acid with a
concentration of 1% and base with a
concentration of 2%. How much
base will you need to neutralize the
acid.
500 ml x 1% = ? x 2%
500 = ? x 2%
500/2 = 250 ml Base
ACID: 1%
BASE: 2%
ACID: 1%
BASE: 2%
ACID: 1%
BASE: 2%
If you have 1 drop of base how many
base particles do you have?
ACID: 1%
BASE: 2%
1 Drop
2 base particles
If you have 2 base particles you
will need the same number of
acid particles to neutralize. In
this example you will need 2
acid particles to neutralize the 2
base particles.
How many drops of the acid are required to
neutralize the 1 drop of the base?
ACID: 1%
BASE: 2%
? drops
1 Drop
2 acid particles
2 base particles
In order to neutralize this base drop, you
would need 2 drops of the acid.
ACID: 1%
BASE: 2%
2 Drops
1 Drop
2 acid particles
2 base particles
How many drops of a base are needed to
neutralize 5 drops an acid?
ACID: 2%
BASE: 1%
5 Drops
? Drops
How many drops of a base are needed to
neutralize 5 drops an acid?
ACID: 2%
BASE: 1%
5 Drops
? Drops
How many drops of a base are needed to
neutralize 5 drops an acid?
ACID: 2%
BASE: 1%
5 Drops
10 particles
? Drops
10 particles
How many drops of a base are needed to
neutralize 5 drops an acid?
ACID: 2%
BASE: 1%
5 Drops
10 particles
10 Drops
10 particles
How many drops of a base are needed to
neutralize 3 drops an acid?
ACID: 4%
3 Drops
BASE: 3%
? Drops
How many drops of a base are needed to
neutralize 3 drops an acid?
ACID: 4%
BASE: 3%
3 Drops
? Drops
How many drops of a base are needed to
neutralize 3 drops an acid?
ACID: 4%
BASE: 3%
3 Drops
12 particles
? Drops
12 particles
How many drops of a base are needed to
neutralize 3 drops an acid?
ACID: 4%
BASE: 3%
3 Drops
12 particles
4 Drops
12 particles
An acid has a concentration of 3% and
requires 6 drops to neutralize 9 drops of base.
What is the concentration of the base?
ACID: 3%
BASE: ?%
6 Drops
9 Drops
An acid has a concentration of 3% and
requires 6 drops to neutralize 9 drops of base.
What is the concentration of the base?
ACID: 3%
BASE: ?%
6 Drops
9 Drops
18 particles
18 particles
ACID: 3%
BASE: 2%
6 Drops
9 Drops
18 particles
18 particles