2.2.3 Modern analytical techniques 0.0 / 5 ? ChemistrySpectroscopyASOCR Created by: upsidedown1004Created on: 01-06-16 13:25 What happens when molecules absorb infrared radiation? specific frequencies cause covalent bonds to vibrate 1 of 7 How are compounds identified using infrared spectroscopy? computer will compare IR spectra against a database of known pure compounds 2 of 7 How can you identify an alcohol from IR? peak of O-H bond 3 of 7 How can you identify an aldehyde or ketone from IR? peak of C=O bond 4 of 7 How can you identify a carboxylic acid from IR? peak of O=C and very broad O-H 5 of 7 How do modern breathalysers work? measure ethanol in breath using IR spec 6 of 7 what are the uses of mass spectrometry? determination of relative isotropic masses // identify elements (space probes and monitoring environmental pollution) 7 of 7
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