Summary CIE AS Chemistry Note Unit 22 - Analytical techniques
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Course
Unit 22 - Analytical techniques (9701)
Institution
CIE
These notes cover the whole syllabus of 9701 Cambridge International Examination, AS Level Chemistry Notes what divided into to different Units. You may find each notes have corresponded specifically in each term from syllabus.
CIE AS Chemistry Note Unit 22 - Analytical techniques
Alevel Chemistry Revision OC 22
Revision Material
Duration: 9th – 14th March
Topic 22 Analytical techniques
Analytical techniques are important tools for investigating compounds.
Learning outcomes
Candidates should be able to:
22.2 Infra-red spectroscopy (a) analyse an infra-red spectrum of a simple molecule to identify functional groups (see the Data
Booklet for the functional groups required)
, 22.2 Infra-red spectroscopy
analyse an infra-red spectrum of a simple molecule to identify functional groups (see the Data Booklet for the functional
groups required)
Data Booklet
Characteristic infra-red absorption frequencies for some selected bonds
Absorbance (%) 0
Peak frequency = 1/𝜆
peak
Infra Red Spectrum
1. Vibrations of a covalent bond absorb some particular infra red frequencies
2. Types of vibrations
Bond stretching
Vibrations of covalent bonds
Bond bending
3. Infra red spectrum
Absorbance (%) 0
Wavenumber / cm-1 (frequency)
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