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experiment 20 - Experiment 20 pH Titration Cureves Taylor...

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Experiment 20: pH Titration Cureves Taylor MacDonald Partner: Laura Ritchey 5/13/08 Tuesday Group #19 TA: Khoduna
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Introduction The experiment 20 was done to work together with my lab partner in order to obtain titration curves for the titrations of four different acids and bases. From these curves we were able to determine the equivalent point pH for each reaction and, for the titration curves involving weak acids or bases, calculate the pK a . We were given four unknowns to titrate using NaOH or HCl. In order to determine whether to use the acid or base for titration we first determined the pH of the unknown solutions. For solutions of pH lower than 7 we were able to determine that they were acidic so we needed to use NaOH for the titrations and HCl for basic solutions of pH greater than 7. From the titration curves generated we were able to determine what type of titration took place, i.e. strong acid titrated by strong base, weak acid titrated by strong base, etc. This experiment
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