Question

Answer the following questions that relate to a buffer solution that contains hydrofluoricacid, HF, and sodium fluoride, NaF.(K, for HF = 6.8 × 10-4) A.) The pk, for HF is

equal to 3.17. A diagram shown below is a particulate representationof a buffer solution containing HF and F-. Based on the information in the diagram,do you predict that the pH of this solution should be less than, equal to, or greaterthan 3.17? Justify your answer. B.) A buffer solution is made by mixing equimolar amounts of HF(aq) and NaF(aq). Whena small amount of 12 M HNO3(aq) is added to this buffer, the pH of the solutionchanges from 3.17 to 3.15. Write a balanced net ionic equation that accounts forthe fact that the pH does not change significantly when the HNO;(aq) is added tothe buffer solution. the buffer solution.C.) Determine the volume, in mL, of 10.0M NaOH(aq) that should be added to 1000 mLof 1.0 M HF(aq) in order to create a buffer solution that has a pH of 3.17. Justify your answer with calculations.

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