A mixture contains initially benzoic acid C6H5CO2(weak acid), Ka = 6.28 x 10^-5, and its concentration is 0.250 M, and sodium benzoate of 0.400M. 500mL of this buffer were titrated with a strong base 250 mL of NaOH that has a pH of 12.875.  a) What should the pH be after the addition of the base? b) Why do you think that this pH is correct? Please explain in terms of what really happened during the process that led to this pH, what specific ions or molecules affected the result? c) Sketch the titration curve that will result from this process. d) Predict the pH at the equivalence point, less, more, or equal to 7? Explain?

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Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for