CHEM 221 Lecture 1: _Lab 9, Part 1 Post-Lab (95)
Document Summary
It would be bad for our data to not match anything or be similar to any ka values on the master inventory list. Measurement errors: collecting wrong amount of unknown acid, collecting wrong amount of naoh, or add too much or too little c2h140) Contamination with ph probe: do not clean/wash out chemicals properly when performing each titration. Miscalculations: miscalculate average of ph, use wrong formula to find concentration of acid, place wrong values into each formula used. External factors: end point error, misreading volumes, concentrations, faulty use of equipment, contaminated glassware. Assembling apparatus with the ph probe and the drop counter. Be sure to stir the solution and have room to do so. Click collect data then determine the equivalence points and ph with labquest. Be sure to continue to stir solution. When complete press stop and dispose titration with water. Place 100 ml beaker with 15 ml of an unknown acid under the apparatus.
