Acid Base Titration
Purpose
 To calculate the molarity of an acid by
titrating it with a base
Procedure
 1. Fill buret A with acid and buret B with
base.
 2. Run 10.0 mL of acid into the erlenmeyer
flask.
 3. Add 2 drops of phenolphthalein to the
erlenmeyer flask
 4. Swirl and add base to the flask until it
turns pink.
Procedure
 5. Add acid until the flask turns clear.
 6. Add base SLOWLY until the flask turns the
lightest pink
 7. Record the volume of acid and base used.
 8. Refill burets and complete lab again from
step 1, but this time run 15 mL into flask
Data
Trial 1
 Molarity of Base = .500 M
 Volume of Base =
 Volume of Acid =
Trial 2
 Molarity of Base = .500 M
 Volume of Base =
 Volume of Acid =
Calculations
 MAVA = MBVB
Conclusion
 Titration involves the reaction between an
acid and a base to form water and salt. We
found the molarity of the acid to be
___________ and _______________ . Two
sources of error include: