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OCR C7 analysis, chromatography and titrations
Description
Mind Map on OCR C7 analysis, chromatography and titrations, created by Samina Rashid on 13/01/2014.
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Mind Map by
Samina Rashid
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Created by
Samina Rashid
about 10 years ago
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Resource summary
OCR C7 analysis, chromatography and titrations
analytical procedures
know the difference between qualitative and quantitative
be familiar with how samples are analysed in the lab
chromatography
what is it?
mobile phase
stationary phase
aqueous and non aqueous solvents
how does it work (dynamic equilibrium)
how does it separate?
using a reference database of materials
compare paper and thin layer chromatography
calculate RF value
locating agents
gas chromatography
how it works
retention time
interpret results
titrations
steps by step procedure
measure accurately sample volume
dissolving if needed
measuring colour change/ volume needed
concentration is grams per dm3
how to make a standard solution
work out concentration from titration results
degree of uncertainty in results
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