Titration of Vinegar!!

Now you know all about titration, lets try it out to see if it really works!!!

For this lab we used Vinegar (acetic acid or CH3COOH) and Sodium Hydroxide (NaOH).
We also used:

Phenolphthalein Indicator
Pipet
Lab Stand
Buret
Buret Clamp
Funnel
Erlenmayer Flask

The NaOH had a concentration of 1.0M and we had to find the volume of NaOh needed to neutralize 10.0mL of Acetic Acid.
The balanced equation is:

NaOH + CH3COOH = NaCH3COOH + HOH(water)

Next we set up the Buret with NaOH up to the 0.3mL line and measured 10.0mL of vinegar into an Erlenmayer Flask placed underneath. Then we put a drop of Phenolphthalein into the vinegar.

We then added NaOH into the vinegar b it by bit until the solution in the Erlenmayer Flask turned pink. We then recorded the amount of NaOH we had used and started over. We did this test 4 times to be sure of our accuracy and then found the average of all of the tests.

Our average of mLs used was 8.8mL and we used these results to determine the concentration of acetic acid.

0.0088L x 1mol x1 x 1           = 0.88M CH3COOH
                  L       1   0.010L

The acepted value of Acetic acid is 0.85M.

We determined our percent error with the equation:

Theoretical - Experimental     x100 = percent error
         Theoretical


  0.85-0.88 x100 =  3.5% error
       0.85


And thats all for now folks!!