Question

1b. Identifying the Compounds in an unknown (7p). Below are three (3) reference standard chromatograms, one each for pure propyl acetate, isoamyl acetate and butyl acetate. The fourth (bottom right) chromatogram is the unknown. Assume all the chromatograms were obtained using a microliter syringe rinsed with ethanol as mentioned in the Lab Assignment 6 Guide. Employing the chromatograms, determine the compound(s) in the unknown. Show all work in a highly organized fashion - this is best accomplished by preparing a table that organizes the information. Pure Propyl acetate Pure Isoamyl acetate Intensity Intensity (uv) (uV) "Ethanol "Ethanol peak" peak" 0 Time (minutes) Time (minutes) Pure Butyl acetate Unknown Intensity (V) Intensity (UV) "Ethanol peak "Ethanol peak" 0 1 2. 3 Time (minutes) 0 1 Time (minutes)