1
answer
0
watching
188
views
11 Nov 2019
Experiment 6: Prelab Worksheet (Hand in at the start of the experiment) Date: Section:_ Grade Name Record all values with the correct number of significant figures and units. Place all answers on the line next to the question Show calculations for any numerical answers See any 114 TA in the help office before your prelab is due if you have any questions. Your answer must be completely correct to get any credit for the answer, no p partial credit 1. What is the purpose of a buffer? Answer using this data for the remaining questions on this page: For 1.0L ofan acetic acid solution: K. = 1,8 x 10 s and [HA-0.250M? 2. Calculate the pH of the solution 3. What is the pK.? 4. Calculate the pH of the solution if you make it a buffer by adding enough solid sodium acetate to make the concentration of acetate ion equal to 0.35M. The volume of the solution does not change. 5. What is the new concentration of [HA] if 2.0mL of 5.00M of HCI is added to 1.000L of the solution 6. What is the new pH? 107
Experiment 6: Prelab Worksheet (Hand in at the start of the experiment) Date: Section:_ Grade Name Record all values with the correct number of significant figures and units. Place all answers on the line next to the question Show calculations for any numerical answers See any 114 TA in the help office before your prelab is due if you have any questions. Your answer must be completely correct to get any credit for the answer, no p partial credit 1. What is the purpose of a buffer? Answer using this data for the remaining questions on this page: For 1.0L ofan acetic acid solution: K. = 1,8 x 10 s and [HA-0.250M? 2. Calculate the pH of the solution 3. What is the pK.? 4. Calculate the pH of the solution if you make it a buffer by adding enough solid sodium acetate to make the concentration of acetate ion equal to 0.35M. The volume of the solution does not change. 5. What is the new concentration of [HA] if 2.0mL of 5.00M of HCI is added to 1.000L of the solution 6. What is the new pH? 107
Trinidad TremblayLv2
24 Jan 2019