5. What is the pH of 250.0mL solution that is 0.0955 M HCH3CO2(Ka=1.8x10-5) and 0.125 M NaCH3CO2. a. Now, 20.0 mL of 0.455 M HCl(aq) is added to the original buffer. i. Write the neutralizationreaction (use the actual species in the reaction). ii. Find themoles of all species. iii. Build a stoichiometry table with thereaction and the data (or anything that shows what happens in thereaction). iv. What is your prediction for the pH change comparedwith the original buffer? Compared to the pKa? v. What is the pH ofthe solution? Was your prediction correct? vi. Do you still have abuffer? Why? b. What is the pH of the system if instead, 20.0mL of0.455M Ca(OH)2(aq) is added to the original buffer? i. Do you stillhave a buffer? Why?
