IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => GCE AS & A2 Level => Sciences => Topic started by: ashwinkandel on September 30, 2010, 01:35:34 pm

Title: organic chemistry help required. plz
Post by: ashwinkandel on September 30, 2010, 01:35:34 pm: how can we determine which are the functional group of a organic compound. Can someone explain me for this compound 3-methyl-hex-2-enol
Title: Re: organic chemistry help required. plz
Post by: Master_Key on September 30, 2010, 02:07:35 pm: the answer for that is that -OH is functional froup for 3-methyl-hex-2-enol.
Title: Re: organic chemistry help required. plz
Post by: ashwinkandel on September 30, 2010, 02:41:02 pm: is OH only the functional group for that compound?
Title: Re: organic chemistry help required. plz
Post by: elemis on September 30, 2010, 02:44:04 pm: I think CH3 (methyl) is a functional group too.
Title: Re: organic chemistry help required. plz
Post by: ashwinkandel on September 30, 2010, 03:03:30 pm: in marking scheme i found alkene also functional group. Can anyone explain me why alkene is also functional group?
Title: Re: organic chemistry help required. plz
Post by: SpongeBob on September 30, 2010, 04:31:18 pm: Quote from: ashwinkandel on September 30, 2010, 03:03:30 pm
in marking scheme i found alkene also functional group. Can anyone explain me why alkene is also functional group?

Alkenes have characteristic properties.They have a general formula CnH2n.
Title: Re: organic chemistry help required. plz
Post by: Vin on October 01, 2010, 02:07:33 am: Common functional groups.

-> R-COOH = acidic group

->R- OH = alcohol group

->R - COO - R' = Ester group

->R - CHo = Aldehyde group

O
||
-> R - C - R' - Ketone group

These are the groups which I'm aware of, apparently.
Title: Re: organic chemistry help required. plz
Post by: Vin on October 01, 2010, 02:08:30 am: Quote from: Ari Ben Canaan on September 30, 2010, 02:44:04 pm
I think CH3 (methyl) is a functional group too.

Yup.
Title: Re: organic chemistry help required. plz
Post by: ashwinkandel on October 01, 2010, 03:47:23 am: for the compound 3-methyl-hex-2-enol , alkene is also considered as functional group but how???
Title: Re: organic chemistry help required. plz
Post by: Deadly_king on October 01, 2010, 05:37:36 am: Quote from: ashwinkandel on October 01, 2010, 03:47:23 am
for the compound 3-methyl-hex-2-enol , alkene is also considered as functional group but how???

The functional groups are methyl, alcohol and alkene groups.

3-methyl-hex-2-enol is an alkene consisting of two OH groups of atoms. The fact that it is an enol makes it an alkene.

Otherwise it would have been simply said to be 3-methyl-hex-2-anol

Just like for hexene and hexane.
Hexene is an alkene while hexane is an alkane. For this compound, it contains two OH groups each from the 1 carbon forming the carbon-carbon double bond.

Hope it helps :)
Title: Re: organic chemistry help required. plz
Post by: ashwinkandel on October 01, 2010, 12:39:55 pm: Quote from: Deadly_king on October 01, 2010, 05:37:36 am
The functional groups are methyl, alcohol and alkene groups.

3-methyl-hex-2-enol is an alkene consisting of two OH groups of atoms. The fact that it is an enol makes it an alkene.

Otherwise it would have been simply said to be 3-methyl-hex-2-anol

Just like for hexene and hexane.
Hexene is an alkene while hexane is an alkane. For this compound, it contains two OH groups each from the 1 carbon forming the carbon-carbon double bond.

Hope it helps :)

thanks for the help
Title: Re: organic chemistry help required. plz
Post by: Deadly_king on October 01, 2010, 05:43:03 pm: Quote from: ashwinkandel on October 01, 2010, 12:39:55 pm
thanks for the help

Anytime pal :)