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Sample Preparation, Preparation of the Titrant, Titration of Acetic Acid…
Sample Preparation
+3 mL vinegar to Erlenmeyer flask
Record Mass
1-2 drops phenolphtalein indicator
Preparation of the Titrant
Rinse burette w/ 0.05 M NaOH
Close stopcock
Get small beaker
+10 mL solution to burette
Tip burette sideways
Rotate until coated with solution
Open stopcock
Close once all liquid poured out
Pour solution above 0 mark
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Titration of Acetic Acid in Vinegar
Place white sheet under flask
Put flask under beaker
Titrate vinegar
Record initial vol
Dispense titrant into flask
Swirl flask while titrant is added
When near endpoint, each drop will turn sol pink, may disappear due to swirling
single drop at a time
swirl after each drop [until pink color persists for 30-60s]
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