CHEM 51LB Final: Comprehensie Practical Study guide - wet lab & mechanisms!
Document Summary
Write down observations (color, smell, mass, steps on how to do a technique, etc. ) and any necessary calculations (percent yield, percent recovery, or percent composition): recrystallization, melting point, tlc, acid-base extractions. Reflux, gas chromatography, ir, nmr, or any other techniques that take a long time to set up and/or do will not be on the wet lab. 1 question about conversions: similar to doing your reagent table, but just a little bit trickier. 1-2 critical thinking questions: applying lab concepts to a hypothetical situation, such as finding a possible reason that something went wrong in one of your experiments. 1 question where you predict a compound structure using ir and nmr spectra. Lab mathematics reagent table calculations: conversions limiting reagents for theoretical yield, anything in the table. High: inadequate purification or filtration leads to presence of water in solid, leading to a high yield.
