5) To check the accuracy of our results we will compare our results to the label on the vinegar bottle. The bottle contains 4% vinegar. We will need to change our M results to %% in order to calculate a percent error.

Using the average M and the average volume (you have to change it to LITERS) of the acetic acid find the # of moles of acetic acid using the molarity formula from Table T.

Change moles to grams using the gfm of acetic acid (HC,H,O,).

Divide grams of acetic acid by the average volume (this time in ml.) of acetic acid and then multiply by 100. This is your experimental %.


Calculate the % error.

6. What other indicator could we have used?

7. What adjustment to our calculations would we have needed to make if we used barium hydroxide rather than sodium hydroxide? (It might be helpful to write the formula for barium hydroxide