. Associate the diagnostic peaks in the IR with functional groups, and assign the signals in the NMR to specific protons. Use this information to deduce the structures of your compounds. 1.4 1.3 1.2 Figure 5. NMR spectrum (300 MHz) of ethyl (R)-3-hydroxybutanoate, with chiral shift reagent added. 1.404 1.383 1.315 1.292 1.267

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Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.