1. Why should the funnel be removed from the top of the burette while titration is being berformed?
2. While the erlenmeyer flasks used in the titrations must be clean they dont need to be dry. why not?
3. Volumetric glassware (pipettes, burettes, erlenmeyer flasks,etc.)is usually disignated as "TC at 20 C" or "TD at20C". what do "TC" AND "TD" indicate? what is the difference?
4. What are some possible sources of error that might lead to an erroneous determination of concentration of acetic acid.
5. Hygroscopic compounds cannot be used as primary standards because they cannot be weighted accurately. Why is it not possible to weight hygroscopic accurately?