aci bazo

Chem 12
Chapter 15 Pg 599-605, 608-611

•
Acid-base titration is a process for
calculating the concentration of a known
volume of acid or base.

ACID-BASE REACTIONS
ACID-BASE REACTIONS
Titrations
Titrations
ACID-BASE REACTIONS
ACID-BASE REACTIONS
Titrations
Titrations
H
H
2
2
C
C
2
2
O
O
4
4
(aq) + 2 NaOH(aq) --->
(aq) + 2 NaOH(aq) --->

acid
acid


base
base
Na
Na
2
2
C
C
2
2
O
O
4
4
(aq) + 2 H
(aq) + 2 H
2
2
O(liq)
O(liq)
Carry out this reaction using a
Carry out this reaction using a
TITRATION
TITRATION

.
.


Setup for titrating an acid with a base
Setup for titrating an acid with a base

Sample Problem
•
In this sample titration, we are trying to
determine the concentration of 20.00 mL
of HCl. In the titration we will be
neutralizing the HCl with 0.150 M NaOH.

•
Step 1: The NaOH, the titrant, is placed in
the buret. The titrant is the solution of
known concentration that is added from the
buret.

•
Step 2: The HCl is placed in the
Erlenmeyer flask along with approximately
20.00 mL of distilled water and 2-3 drops of
phenolphthalein indicator. Since the
solution in the flask is acidic,
phenolphthalein is colourless.