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Describe suitable chemical tests, with observations, that would confirm the presence of the functional groups in F and G
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(Original post by dayaaa.x)
Describe suitable chemical tests, with observations, that would confirm the presence of the functional groups in F and G
Describe suitable chemical tests, with observations, that would confirm the presence of the functional groups in F and G
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(Original post by EierVonSatan)
What are the functional groups present in F and G?
What are the functional groups present in F and G?
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#5
(Original post by dayaaa.x)
Ketone aldehyde alkene and aromatic (benzene ring)?
Ketone aldehyde alkene and aromatic (benzene ring)?
G has a ketone and an alkene (kind of!) but it has no benzene ring.
Is there a test you know that can distinguish between an aldehyde and a ketone?
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(Original post by EierVonSatan)
F has an aldehyde
G has a ketone and an alkene (kind of!) but it has no benzene ring.
Is there a test you know that can distinguish between an aldehyde and a ketone?
F has an aldehyde
G has a ketone and an alkene (kind of!) but it has no benzene ring.
Is there a test you know that can distinguish between an aldehyde and a ketone?
So do I not need to mention the alkene?
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#8
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#9
(Original post by EierVonSatan)
F has an aldehyde
G has a ketone and an alkene (kind of!) but it has no benzene ring.
Is there a test you know that can distinguish between an aldehyde and a ketone?
F has an aldehyde
G has a ketone and an alkene (kind of!) but it has no benzene ring.
Is there a test you know that can distinguish between an aldehyde and a ketone?
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#10
(Original post by KaziMahathir)
Wait aha what’s the kinda of part for the alkene?
Wait aha what’s the kinda of part for the alkene?
A bit like how a caboxylic acid has a C=O and an O-H but it's nothing like a ketone or alcohol.
I'm going to assume an A-level question would treat the C=C and C=O as separate groups
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(Original post by EierVonSatan)
Tollen's reagent would confirm the presence of an aldehyde. You need a positive test for the ketone and the alkene.
Tollen's reagent would confirm the presence of an aldehyde. You need a positive test for the ketone and the alkene.
for the ketone itd be a carbonyl test using 2,4-DNP??
and for alkene- bromine water test?
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#12
(Original post by EierVonSatan)
The position of that C=C with the C=O is it's own type of functional group - called an enone - it doesn't react like a normal ketone or alkene.
A bit like how a caboxylic acid has a C=O and an O-H but it's nothing like a ketone or alcohol.
I'm going to assume an A-level question would treat the C=C and C=O as separate groups
The position of that C=C with the C=O is it's own type of functional group - called an enone - it doesn't react like a normal ketone or alkene.
A bit like how a caboxylic acid has a C=O and an O-H but it's nothing like a ketone or alcohol.
I'm going to assume an A-level question would treat the C=C and C=O as separate groups
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#13
(Original post by dayaaa.x)
So for aldehyde it’d be the tollens test
for the ketone itd be a carbonyl test using 2,4-DNP??
and for alkene- bromine water test?
So for aldehyde it’d be the tollens test
for the ketone itd be a carbonyl test using 2,4-DNP??
and for alkene- bromine water test?
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