BRAINCAKEOrganic Analysis
Revision notes for Organic Analysis in AQA Chemistry (7404). Read the start of any lesson here, then sign in free for the whole lesson, the R.E.C.I.P.E. recall steps and the quiz.
- Identifying Functional GroupsA functional group is the atom or group of atoms that gives an organic compound its characteristic reactions.
- Test Tube Tests for Organic CompoundsSimple test tube tests can identify the functional group in an organic compound.
- High Resolution Mass SpectrometryIn a mass spectrum, the peak with the highest m/z value (ignoring small isotope peaks) is usually the molecular ion peak, M+.
- Precise Relative Molecular MassThe precise relative molecular mass of a molecule is the sum of the precise relative isotopic masses of the atoms in its molecular formula, using…
- Infrared SpectroscopyInfrared (IR) spectroscopy is an analytical technique that shows which bonds, and so which functional groups, are present in a molecule.
- Bond Vibrations and IR AbsorptionCovalent bonds are not rigid.
- The Fingerprint RegionThe fingerprint region of an IR spectrum is the region below 1500 cm−1.
- Interpreting IR SpectraTo interpret an IR spectrum, match the main absorptions above 1500 cm−1 to bonds using the data sheet, then decide which functional group fits.
- Infrared Radiation and the Greenhouse EffectThe Earth absorbs radiation from the Sun, mainly visible and ultraviolet, and warms up.