I hope you all had a refreshing spring break.
These are the points that come in mind for this week's experiment:
- First of all, make sure the students are using table 3 to indentify their unknown acids. Some tend to use table 1
- Emphasize that they should follow the directions in the manual to open logger pro: C:\Program Files\Logger Pro 3\en-US\...
- When they are calibrating their probes some get confused on what to type in the box that shows up. Tell them that they are supposed to type in the pH of the buffer solution and not the voltage reading. You can avoid this problem by properly explaining what calibration means!
- Some of the students might have diprotic acids so tell them to be careful when they reach the first equivalence point (around 8-12 mL)
- Some of the GoLinks have poor connections. Tell them to check for these poor links before starting, to avoid any re-titrations
- Remind them to be careful with the sig figs on pH values
- There are limited number of buffer solutions, so make sure your students return them back to their place once they're finished
Have a good week :)