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organic chemistry - Coggle Diagram
organic chemistry
alkanes
CnH2n+2
no double carbon bonds
saturated
end in -ane
viscosity of liquid alkanes increases as the number of carbon atoms increase
boiling points of alkanes increase with increasing number of carbons
due to more intermolecular forces
as the hydrocarbon chain length increases, flammability decreases
homologous series order
prop
but
eth
pent
meth
alkenes
contain a double carbon bond
unsaturated
CnH2n
end in -ene
crude oil
found in rocks
made of compounds
most hydrocarbons
most alkanes
separated by fractional distilation
produce fuel and feedstock
method:
the column is hotter at the bottom
smaller molecules have weaker intermolecular forces so lower boiling points and condense near the top of the column
larger molecules have stronger intermolecular forces and condense near the bottom of the column
as the gas rises, the crude oil fractions cool and condense at diferent levels
crude oil is evaporated and enters column as a gas
hydrocarbons
compounds comtaining only hrdrogen nd carbon atoms