Standardized NaOH(M) 0.3757 Initial volume of buret (mL) Volume of vinegar (mL) 10.00 Observations Light purple Final volume of buret (mL) Volume of NaOH(mL) Molarity of acetic acid (M) PHASE 4: Titrate vinegar sample Complete the following steps: 1 Turn on stir plate 2 Start titration by adding standardized sodium hydroxide to Erlenmeyer flask 3 Record your observations in Lab Data 4 Stop titration at endpoint. Record final buret volume and volume of NaOH in Lab Data 5 Turn off stir plate 6 Calculate molarity of acetic acid in vinegar solution. Record concentration in Lab Data GO TO PHASE 5