PRR - VAB QUESTUONS: (Answer in a separate sheet of paper) 1. How can HCO3 function as both the acidic component and as the basic component of the H2CO3/HCO3. buffer system? to Explain your answer with balanced equations. 2. What two factors are involved in determining the exact pH of a buffer? 3. You will be assigned a pH value (per group) to prepare 100mL of 0.1M phosphate buffer. AS A PRE-LAB EXERCISE FILL OUT THE TABLE IN THE DATA SHEET FOR YOUR ASSIGNED pH BEFORE COMING TO LAB. Copy the table into your pre-lab answer sheet. THE DATA WILL BE USED TO PREPARE YOUR BUFFER. Show all calculations in pre-lab