A chemist titrates 160.0 mL of a 0.8962 M cyanic acid (HCNO) solution with 0.6071M KOH solution at 25 "C. Calculate the pH at equivalence. The pK, of cyanic acid is 3.46. Round your answer to 2 decimal places. Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of KOH solution added. PH-0 5

Write the chemical formulas of acetic acid and sodium acetate Determine the pH of the following buffer solution that is a mixture of 50.0m/ of 0.144M acetic acid and 55.0m/. of 0.137M sodium acetate. Ka of acetic acid is 1.8 x 105. Determine the pff of the buffer solution in problem #2 after 4.0m/ of 0.25MNaOH is added,

15 16 17 Questions 15-20 refer to the same weak base/strong acid (WB/SA) titration. The K, of pyridine is 1.7 x 10. A 40.00 mL solution of 0.700 M pyridine (C5H5N) is being titrated with 1.05 M hydrochloric acid (HCI). What is the solution pH before the titration begins? (Two decimal places) Type your answer... Questions 15-20 refer to the same weak base/strong acid (WB/SA) titration. The K, of pyridine is 1.7 x 10¹⁹. A 40.00 mL solution of 0.700 M pyridine (C5H5N) is being titrated with 1.05 M hydrochloric acid (HCI). What volume (in mL) of titrant will have been added at the half-equivalence point? (Two decimal places) 18 Type your answer... Questions 15-20 refer to the same weak base/strong acid (WB/SA) titration. The K, of pyridine is 1.7 x 10⁹. A 40.00 mL solution of 0.700 M pyridine (C5H5N) is being titrated with 1.05 M hydrochloric acid (HCI). What is the solution when 15.00 mL of titrant have been added? (Two decimal places) Type your answer... DD Questions 15-20 refer to the…

A solution is made by mixing 205 mL of 0.100 M formic acid (Ka = 1.7 x 10-4 ) and 230. mL of 0.100 M sodium formate. 3.20 mL of 10.0 M sodium hydroxide are added to this solution. What is the pH? Express your answer in decimal notation rounded to three significant figures.