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Organic Chemistry - Coggle Diagram
Organic Chemistry
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refining petroleum
Method
Carried out in a fractional distillation column which is very hot in the base and cooler towards the top
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The larger the molecules,
the more the viscosity,
the lower their flammability.
Method in lab
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- Heat the petroleum such that individual compounds start to evaporate
- As hot vapour rises, monitor the thermometer reading. Vapour will condense in the cooling tube.
- Replace test tube under condensing tube at 100, 150, 200 and 300 degrees celcius
Cracking
method
- Some contain impurities such as sulphur
- Some are further separated into single compound
- Some molecules are cracked (broken into smaller
molecules) by thermal decompositio