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ACTIVITY 2 A Titration of an Unknown Vinegar Sample with Sodium Hydroxide Activity 2 is an inquiry-based activity to demon- strate the learned technique of determining the acetic acid concentration in vinegar to a vinegar sample from your home. Each type of vinegar has a slightly different concentration of acetic acid. This activity requires the selec- Data Table 2: Titration of Second Vinegar Sample with Sodium Hydroxide Name of Vinegar Sample Mass of Vinegar Volume of Vinegar Density = 1.005 g/mL Initial NaOH Volume in Syringe Final NaOH Volume in Syringe Volume of NaOH Delivered Moles of NaOH Delivered Moles of Acetic Acid in Sample Mass of Acetic Acid in Sample Calculated Molarity of Acetic Acid in the Sampled Vinegar Calculated Percent Mass of Acetic Acid in Sampled Vinegar tion of a vinegar product from your home, a friend's home, or a local restaurant. Only about a teaspoon of vinegar is needed. Attempt to find a different type of vinegar such as cider, malt, or balsamic vinegar. The vinegar included in this kit is white vinegar. Different brands of vinegar may also contain different amounts of acetic acid. Use the same procedure and Data Table 2 to determine the acetic acid content in your vinegar sample. Average Calculated Percent Mass of Acetic Acid in Sampled Vinegar Vinegar Sample 1 Vinegar Sample 2 Vinegar Sample 3