National 5 Chemistry help?

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NL32
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#1
Report Thread starter 7 years ago
#1
How can you identify an ester, a carboxylic acid and an alcohol?

Thanks in advance
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greenladybird
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#2
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#2
(Original post by RossRFC)
How can you identify an ester, a carboxylic acid and an alcohol?

Thanks in advance
Alcohols contain an OH group.
Carboxylic acid contains a COOH group.
Ester contains a COO group(this will always near the middle of the molecule)
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NL32
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#3
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#3
(Original post by greenladybird)
Alcohols contain an OH group.
Carboxylic acid contains a COOH group.
Ester contains a COO group(this will always near the middle of the molecule)
Noo I mean like if they were all in one beaker how would you know which is which and what would you do
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Michael98
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#4
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#4
An ester and carboxylic acid both contain C=O so would decolourise bromine solution whereas an alcohol wouldn't!
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ffiorentini
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#5
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#5
Also, alcohols are flammable, carboxylic acids turn pH indicator red/orange and esters have a (usually nice) smell
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NL32
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#6
Report Thread starter 7 years ago
#6
(Original post by ffiorentini)
Also, alcohols are flammable, carboxylic acids turn pH indicator red/orange and esters have a (usually nice) smell
Thanks haha, this was in my prelim today and didn't know what to put if only I had an answer last night
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