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sciencefan:
Hi,,

The results of test on compound X are here:  http://farm5.static.flickr.com/4131/5070035943_41e9a38176.jpg


Please give me the answer and also I need to know what is the name of compound C and D   ???

Thanks in advance...

Deadly_king:

--- Quote from: sciencefan on October 11, 2010, 05:26:24 am ---Hi,,

The results of test on compound X are here:  http://farm5.static.flickr.com/4131/5070035943_41e9a38176.jpg


Please give me the answer and also I need to know what is the name of compound C and D   ???

Thanks in advance...



--- End quote ---

C : Propan-1-ol
D : 1-Butenoic acid

The question now :
X decolorises bromine water ----> It is alkene,i.e, it contains a double bond ( C=C )
X releases carbon dioxide upon reaction with aqueous sodium carbonate ---> An acidic group is likely to be present.

Hence this eliminates A and B.
However alcohols do not react with carbonates.---> eliminates C as well.

Therefore answer is D

NOTE : It is not necessary that you know the names of the different compounds.

Hope it helps :)

sciencefan:
Thanks to answer me Deadly_king,,

Ok but why the propanol structure is not like this;



                 c=c-c- ( is an isomer)????????
                 of
                this
               c-c-c

nid404:
Bromine water test is positive- shows double bond to be present.
Carbonate test shows presence of acid.

The compound having both the functional groups is D.

An allyl group is a hydrocarbon group with the structural formula H2C=CH-CH2
So C is allylalcohol or prop-2-en-1-ol

D is 3-butenoic acid

You don't need to know the names though.

sciencefan:
Thanks you mr/mrs

Your answer is very precious ;)

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