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Acid-Base Titration Curves Using a pH Meter

GCC CHM 152LL: Acid-Base Titration Curves GCC 2019 page 1 of 8 Acid-Base Titration Curves Using a pH Meter Introduction: In this experiment you will use a pH sensor to collect volume and pH data as you titrate two acids with sodium hydroxide. You will obtain Titration Curves for the following combinations of acids and bases (exact concentrations will be labeled on the reagent bottles and should be written in your data table): 1) hydrochloric acid , HCl(aq) with sodium hydroxide, NaOH(aq); 2) acetic acid , CH3 COOH(aq) with sodium hydroxide, NaOH(aq). The recorded volume and pH values will generate Titration Curves that will be used to compare features of the strong acid curve versus the weak acid curve. You will determine the equivalence point volume and pH for both Curves .

Using a ruler and a pencil draw straight lines at the top and bottom of the the titration curve as shown in Figure 1b. The equivalence point occurs at the middle of the vertical line between the top and bottom lines you drew. Measure the distance between the top and bottom lines (parallel to

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