1. Titration Introduction Experiment

2. Purpose of This Experiment
To understand why titrations are done
To learn how to perform a titration
Observe the consequences of using different indicators

3. YouTube Videos How to Titrate
NAIT Chemical Technology Laboratory Techniques
CarolinaBiologicals
Both are good videos on how to do a titration
CHE118

4. Titrations
A titration uses a known solution to find information about another substance.
We know the molarity and volume used of NaOH and the volume of HCl used. That information will be used to calculate the molarity of HCl.

5. Acid Base Titration
This experiment uses an acid base neutralization reaction
OH H1+ → H2O
At the equivalence point, moles OH1- = moles H1+
At the endpoint, a color change will occur to show us the equivalence point
An indicator is used to cause the color change

6. Equipment Setup 10.0 mL of HCl are pipetted into flask
Add a few drops of the indicator.
The NaOH is added from the burette to the flask.
Stop the titration when the solution becomes very light pink (this color pink is too dark).

7. Remember…..
The NaOH solution is the known substance; we know the molarity and volume used (measured from buret)
The HCl solution is the substance we need more information about; we are calculating the molarity of the HCl solution
M = ( moles / L )
moles OH1- = (MOH1-) (LOH1-) MH1+ = (moles H1+ / LH1+)

8. Titration Work
Part 1: Preform titrations with the phenolphthalein indicator
Part 2: Perform additional titrations using unsuitable indicators