Titration Analysis of Vinegar Vinegar is conveniently analyzed
by titration with sodium hydroxide. What is the concentration of
acetic acid, CH3COOH(aq) in a sample of vinegar? Several 25.00
mL samples of NaOH(aq) are titrated with an unknown solution of
acetic acid. Bromothymol blue , is used to detect the
equivalence point. The indicator changes from blue to pale
yellow at the endpoint of the reaction. Watch a titration video
to learn proper lab techniques. Flash object created by Chemical
Education Research Group, Department of Chemistry, Iowa State
University 1. Follow the numbered steps. First select weak acid
strong base. 2. Fill the buret with Acid. 3. Select the acid
(CH3COOH) and the base (NaOH). 4. Select the indicator
(Bromothymol blue). 5. Record the volume and molarity of the
base in the flask. 6. Click on the Concordant Values button to
fill the buret. 7. Push the slider up to add a volume of acid
that will cause a color change. 8. Make note of the point at
which the color change occurs and refi