Answer Happy

prepare 25 mL 0.40 M sodium acetate acetic acid buffer solution at a pH of 4.40 (pka 4.74).
Homework Due in 14 hours • NOTE: You will be provided with a 3.0M Acetic acid stock solution and Solid Sodium Acetate (MW 82.03 g/mol) with which to make the buffer. Please complete the calculations needed to prepare the buffer PRIOR to coming to lab. • Sodium Acetate is a solid that should be weighed to the nearest 0.001 g, while Acetate acid is a liquid on a solution with a molar concentration • From this buffer solution, take 10 mL, measure its pH, then begin a titration process as described previously with NaOH 0.3M. • Measure the pH every -0.5 mL and remember to stir the solution and record the new pH every time. you add the titrant. Record the pH until the buffer pH changes by 1 pH unit.. Repeat the process with another 10 ml solution of buffer, using 0.3 M HCl as titrant. Record the pH until the buffer pH changes by 1 pH unit. Take the remaining 5 mL of prepared buffer and dilute with 20 mL of DI water using your 25 mL volumetric. (1:5 dilution) From this solution, take 10 ml, measure its pH, then begin a titration process as described previously with NaOH 0.3M. Measure the pH every 0.5 mL and remember to stir the solution and record the new pH every time you add the titrant. th