Alkanes - chemistry

[ana_mujahid]

this aint really a hard topic, but my specification requires to know the uses of the first five.

Methane i know its cooking gas

whats the use of the other 4

ethane
propane
butane
pentane


and where do they exist?


and is the homologous series just a series of organic elements?

[Unique Muslimah]

Homologous series is a serious of compounds that contain the same functional group and have the same general formula.The formula of each member of the series differs from the next by CH2

Do you want their uses as in,from where they are fractioned from the fractional distillation coloumn?

[Mace]

Propane is the primary component in LP/LPG fuel used in outdoor grilles and such. In fact here in the US we refer to LP canisters as just "Propane." I don't know if you do in the UK.

Butane is found in cigarette lighters and also in small torches like what you would use for a creme brulee or to crisp meat.

I've only seen pentane in the lab as a solvent. Someone else will have to help with other uses.

Hope this helps.

[Unique Muslimah]

....

[ana_mujahid]

Unique_Muslimah, yes after they have been fractionally distilled from crude oil.

Mace, thanks for the uses of some

[ana_mujahid]

Other common uses for butane include refrigeration, heating and fuel for cigarette lighters.

[Unique Muslimah]

Ethane: To make polyethene
Propane: Gas cylinders
Butane: Camping Gas
Pentane: No idea..

For my GCSEs,this is what I learnt
http://www.energyinst.org.uk/education/coryton/images/column.gif

[ana_mujahid]

Ethane: To make polyethene
Propane: Gas cylinders
Butane: Camping Gas
Pentane: No idea..

For my GCSEs,this is what I learnt
http://www.energyinst.org.uk/education/coryton/images/column.gif

thanks

i think ill be taking that next term,

[ana_mujahid]

Unique_Muslimah;

u said u were doing a-lvls, i wanted to ask, when u done ur GCSE's and u were asked for the chlorination of methane, did u have to go on with the experiment, (chloromethane --> dichloromethane --> trichloromethans --> tetrachloromethans etc...?)

[Unique Muslimah]

I will be honest with you,I didn't do chlorination for either GCSEs or A Level Chemistry.What board are you doing for chemistry?AQA?

[ana_mujahid]

I will be honest with you,I didn't do chlorination for either GCSEs or A Level Chemistry.What board are you doing for chemistry?AQA?

IGCSE edexcel

(I cuz its international)

[mizfissy815]

Unique_Muslimah;

u said u were doing a-lvls, i wanted to ask, when u done ur GCSE's and u were asked for the chlorination of methane, did u have to go on with the experiment, (chloromethane --> dichloromethane --> trichloromethans --> tetrachloromethans etc...?)

That's pretty much the method. The condition required for this reaction(s) is ultra-violet light/ or sunlight. The reaction is known as free radical substitution- I don't think you need to know that for IGCSEs though.

[ana_mujahid]

That's pretty much the method. The condition required for this reaction(s) is ultra-violet light/ or sunlight. The reaction is known as free radical substitution- I don't think you need to know that for IGCSEs though.

oh ok, thanks :up:

ill just learn it anyways, in the exam or not