Overview
Results & Calculations:
- Data tables:
- Summarizing pH of tap water, DI water, outgassed water with bubbles
- Summarizing pH of provided acids and bases
- Summarizing acetic acid pH and % dissociation
- Graph(s) associated with acetic acid & % dissociation
- Calculations associated with the Ka of acetic acid
- Don’t forget to get the known value from the CRC to calculate a % error!
Discussion:
- A few things to consider:
- Did your pH values for various substances make sense? Why? Why not?
- What sorts of observations did you make? Did those contribute to your understanding of the various pH values you obtained?
- How did your experimental Ka value of acetic acid compare to the known value? How did the experimental values compare to each other? Should the Ka value change based on concentration? Why? Why not?
- What sources of error can you identify?