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April 06, 2026, 01:47:06 pm
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Author Topic: Identifying b/w butan-1-ol and buntanoic acid  (Read 1118 times)  Share 

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bentennason

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Identifying b/w butan-1-ol and buntanoic acid
« on: May 28, 2012, 09:31:00 pm »
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Q: Give one chemical test that can be used to distinguish b/w butan-1-ol and butanoic acid.  Describe the results that would be expected the test.

Could Cl2 be used as a reactant and undergo substitution with butan-1-ol? But will it also react with butanoic acid as well?
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vgardiy

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Re: Identifying b/w butan-1-ol and buntanoic acid
« Reply #1 on: May 28, 2012, 09:34:21 pm »
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Couldnt you just add an acid/base indicator and see which one has a lower pH?
I'm fairly certain that you can't substitute -OH's for -Cl's aswell, Isnt it the other way around?

Otherwise there's also NMR and IR.
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bentennason

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Re: Identifying b/w butan-1-ol and buntanoic acid
« Reply #2 on: May 28, 2012, 09:47:23 pm »
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Ohhhh so it can only go from Cl -> OH. THANKS (prob just lost 10^3 marks)
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rayray17

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Re: Identifying b/w butan-1-ol and buntanoic acid
« Reply #3 on: May 28, 2012, 09:52:15 pm »
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The test most commonly used seen in books is adding Na2CO3. Butanoic acid is an acid and in this reaction -CO2 will evolve and bubble's will be seen. This wont happen with butanol. The cl2 is correct but there is no way of you knowing which one reacted which one didn't.
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bentennason

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Re: Identifying b/w butan-1-ol and buntanoic acid
« Reply #4 on: May 28, 2012, 10:03:00 pm »
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Oh okay, thanks for the clarification. Just also realised that there would be no diff in physical appearance when adding Cl2 lol
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