When the reaction was complete, the number of moles of base used equals the number of moles of acid originally present knowing the number of moles of acid allowed you to compute the concentration of acid in the vinegar sample.Ĭonceptually, this week's lab is no different, although the procedure is a bit more elaborate. The reaction in that acid-base titration was:ĬH 3COOH + NaOH -> CH 3COO - + Na + + H 2O. The sample (vinegar) contained an unknown quantity of acetic acid, to which you carefully added base until the reaction was complete. Titrating Vinegar was conceptually and procedurally simple. Relate moles of titrant used to moles of analyzed substance in sample through reaction stoichiometry.
Carefully add titrant from buret until endpoint is reached and measure amount of titrant added.