Discussion 5

Discussion 5 - Overall, the goal of this experiment was to...

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Overall, the goal of this experiment was to use titration to standardize NaOH solution, and then, to use the standardized NaOH to titrate a different solution and figure out the concentration of acid. The experiment taught us about acid-base equilibrium and also how to perform different kinds of titrations. In part 1 of the experiment, the goal was definitely accomplished as we used a known amount of the primary standard, KHP, and performed a titration with an unknown concentration of NaOH in order to standardize the NaOH solution and figure out the exact concentration of NaOH. In this first titration, phenolthalein was used as an indicator because its endpoint is near the equivalence point of our reaction. While performing the titration, as more NaOH was added, the flask solution of KHP mixed with NaOH added became more basic. Finally, at the equivalence point, where the moles of NaOH added was equal to the moles of KHP in the flask, the solution turned a light, faint pink. We performed a titration for three trials, but at the end we decided to discard the results from trial one, because we performed an error and the amount of NaOH added was not enough. The solution in the flask was not pink enough, and clearer than the flask solutions in the other trials. Therefore, the color difference meant that less than enough NaOH was added so the concentration of NaOH from trial 1 would be less than the theoretical
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Discussion 5 - Overall, the goal of this experiment was to...

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