How will you identify benzoates of ethylene glycols, trimethylene glycol and glycerol?

Answer 1

It depends on what tools you have available to you! This sounds like a lab question, so you should definitely refer to the resources you had in your lab resources, or past experience.

Here are a few ideas that might get you started: NMR: Due to the structural differences of your benzoates, they could be differentiated very quickly with simple 1H NMR. The numbers of peaks/unique protons would clearly differentiate the 3.

Physical characteristics: Are there physical characteristic that we can use to tell the three apart? Mass spectra would immediately tell you which is which. Are there differences in melting point/solubility/density/etc. that you can test for? To answer these, think about what techniques you have learned, and search online for the characteristics of your compounds that you need to distinguish.