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7938419
Crude Oil double award revision
Descrição
Revision diagram for crude oil and alkanes
Sem etiquetas
crude oil
organic
alkanes
chemistry
a level
Mapa Mental por
Jennie Wilding
, atualizado more than 1 year ago
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Criado por
Jennie Wilding
mais de 7 anos atrás
12
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Resumo de Recurso
Crude Oil double award revision
mixture of hydrocarbons
compound containing ONLY c & H atoms
Alkanes
saturated
only single bonds between C atoms
CnH2n+2
react with bromine
needs UV light
substitution reaction
CH4 + Br2 - CH3Br
combustion
reaction with oxygen
forms carbon dioxide & water
limited combustion if not enough oxygen
forms carbon monoxide & water
poisonous as reduces capacity of blood to carry oxygen
homologous series
methane
CH4
ethane
C2H6
propane
C3H8
butane
C4H10
pentane
C5H12
made up of different sized molecules
separated using fractional distillation
small molecules have low bpt; large molecules have high bpt
takes place in fractionating tower
tower hotter at bottom, cooler at top
smaller molecules formed at top of tower, larger at bottom
separated into fractions
bitumen
making roads
highest bpt & most viscous
diesel oil
fuel for lorries
kerosene
fuel for planes
gasoline
fuel for cars
refinery gases
camping gas
lowest bpt & least visous
Cracking of fractions
long chain alkanes converted to shorter chain alkanes
better fuels
alkenes are also produced
600-700C
aluminium oxide catalyst
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