6.2.5
Organic
Synthesis
Section 6.2.5 covers the techniques and procedures for preparing and purifying organic solids with Quickfit apparatus, distillation and heating under reflux, filtration under reduced pressure, recrystallisation and melting points (a); identifying the functional groups in a molecule with several groups and predicting its properties and reactions (b); and multi-stage synthetic routes (c). The deduction page gathers the spectroscopic skills a synthesis question needs, and the liquids page recaps the 4.2.3 techniques at A Level.
Revision Notes
5 revision notes, in the order the specification teaches them.
Deducing Formulae from Analytical Data
Deducing empirical, molecular and structural formulae from percentage composition and spectra.
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Identifying Functional Groups by Chemical Tests
Identifying functional groups by chemical tests and predicting the properties and reactions of unfamiliar compounds.
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Choosing Procedures and Managing Hazards
Selecting and justifying practical procedures for organic reactions with Quickfit apparatus.
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Preparing and Purifying Organic Solids
Preparing and purifying organic solids: reflux, filtration, recrystallisation, drying and melting temperature determination.
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Purifying Liquids and Checking Purity
Purifying organic liquids: distillation, solvent extraction, drying and checking purity.
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Summary map
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Multi-Stage Synthesis Map
OCR A Level Chemistry A · 6.2.5 Organic synthesis
All of 6.2.5 on one A4 page: purifying a solid, melting point, tests for several groups and multi-stage routes.
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6.2.5
- a (i) a
the techniques and procedures used for the preparation of organic solids: use of Quickfit apparatus (see also 4.2.3 a)
Revise - a (i) b
the techniques and procedures used for the preparation of organic solids: distillation and heating under reflux (see also 4.2.3 a)
Revise - a (ii) a
the techniques and procedures used for the purification of an organic solid: filtration under reduced pressure
Revise - a (ii) b
the techniques and procedures used for the purification of an organic solid: recrystallisation
Revise - a (ii) c
the techniques and procedures used for the purification of an organic solid: measurement of melting points
Revise - b (i)
for an organic molecule containing several functional groups: identification of individual functional groups
Revise - b (ii)
for an organic molecule containing several functional groups: prediction of properties and reactions
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