Prompt: Post a picture of your titration setup, and a photo of your analyte at the equivalence point. Write a short summary of your procedure. Calculate the percent ionization of vinegar and describe why it is such a low number.

Titration Set-Up

Equivalence Point:

Summary: In this lab we were supposed to determine at the percent ionization of vinegar. To do so we first cleaned the burette with NaOH to ensure there was no leftover substance from a prior experiment. We then measured 7 mL of vinegar into our flask and added 4 drops of phenolphthalein. We then began to slowly add drops of NaOH. We knew it had reached the equivalence point when the solution remained a light pink color. We ended up having to do the experiment twice to try to get a more accurate result the second time than we had the first. Our second attempt turned out to be significantly more accurate, and in that trial we ended up adding 23.3 mL of NaOH.

Percent Ionization: .45%
Description: Vinegar does not ionize well.