Use the titration curve for the weak acid to calculate the pH of a 0.150 M solution of that weak acid.Round the pKa to the nearest whole number for the calculation, and enter your answer for the pH to two significant figures.

a) Determine the mass (in grams) of sodium formate that must be added to 1.00 L of 0.180 M formic acid to prepare a buffer with a pH = 3.50. Assume there is no change in volume upon addition of the sodium formate. b) Write the predominant chemical reaction that occurs when 0.050 mol of HClO4 is added to 1.00 L of the buffer prepared in part a and calculate the pH of the solution.

A chemist titrates 100.0 mL of a 0.3992 M ethylamine (C,H;NH,) solution with 0.6385 M HCl solution at 25 °C. Calculate the pH at equivalence. The p K, of ethylamine is 3.19. 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 HCl solution added. pH =

using the simultaneous equation method. please answer fully

The pH of 0.200 M NaA (the sodium salt of a weak acid HA) is 8.24. Calculate the pKa of the weak acid HA.

A chemist titrates 90.0 mL of a 0.6900M ethylamine (C,H,NH,) solution with 0.0547M HNO, solution at 25 °C. Calculate the pH at equivalence. The p K of ethylamine is 3.19. 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 HNO, solution added. pH = da Explanation Check O 2021 McGraw-H Education All Rights Reserved Terms of Use Pvacy Accessibity 會 APR 23 MacBook Air 20 888 FS esc & delete $ 8 5 2 E R T Y Q W F G

A chemist titrates 110.0 mL of a 0.7452M aniline (C,H,NH,) solution with 0.5088M HCl solution at 25 °C. Calculate the pH at equivalence. The p K, of aniline is 4.87. 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 HCl solution added. pH = ||