Vinegar contains acetic acid. You titrate a vinegar sample with NaOH of known concentration according to the following reaction: HC₂H3O2 + NaOH → NaC₂H3O2 + H₂O You find that a 25.00 mL sample of vinegar requires 28.33 mL of 0.953 M NaOH for titration to the equivalence point. What is the concentration of the acetic acid in the vinegar sample? [?] M HC₂H302