Topic 16

Created by: Jemma1494
Created on: 06-06-21 17:35

IR spectroscopy

IR radiation is passed through a sample and some frequencies are absorbed

Frequencies of IR radiation correlate to different bonds within a molecule

Stronger bonds have a higher frequency

Measure in cm-1

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Mass spectroscopy

Atoms are ionised to form +1 cations

Ions are accelerated using an electromagnet to give them the same kinetic energy

Different masses travel at different velocities
(Heavier = slower)

The ions are detected and time of flight issued to calculate mass a

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Test for C=C

Bromine water
(Orange->colourless)

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Test for R-X

AgNO3
(Precipitate based of X group)

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Test for R-OH

Acidified potassium dichromate for primary, secondary
(Orange->green)

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Test for R-CHO

Tollens (silver mirror)

Fehlings (blue -> red precipitate)

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Test for R-COOH

NaHCO3
(CO2 produced)

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Other cards in this set

Card 2

Front

Mass spectroscopy

Back

Card 3

Front

Test for C=C

Back

Card 4

Front

Test for R-X

Back

Card 5

Front

Test for R-OH

Back

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Topic 16