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    Alanine is a carboyxlic acid and I am doing a question which asks what happens when it is added to HCl. I understand both will dissociate. Will the Cl- from the HCl then attack the O- in the alanine thus forming H2NCH4COO+Cl- ?
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    (Original post by SilverstarDJ)
    Alanine is a carboyxlic acid and I am doing a question which asks what happens when it is added to HCl. I understand both will dissociate. Will the Cl- from the HCl then attack the O- in the alanine thus forming H2NCH4COO+Cl- ?
    Don't think of alanine as just a carboxylic acid - there's an amino group on the other side too. Certain molecules contain both carboxylic acid groups and amino groups. Once you figure that out, you have look what happens when these types of molecules are placed into varying pH's
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    (Original post by Irrelevance)
    Don't think of alanine as just a carboxylic acid - there's an amino group on the other side too. Certain molecules contain both carboxylic acid groups and amino groups. Once you figure that out, you have look what happens when these types of molecules are placed into varying pH's
    Thanks for your reply, however I'm still not sure how the amino group will react to the acid. I know that proteins denature if pH from biology a level but I never really considered the specifics of what happens.

    Could anyone give me perhaps another clue?

    Thank you.
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    (Original post by SilverstarDJ)
    Thanks for your reply, however I'm still not sure how the amino group will react to the acid. I know that proteins denature if pH from biology a level but I never really considered the specifics of what happens.

    Could anyone give me perhaps another clue?

    Thank you.
    This should help:

    http://www.chemguide.co.uk/organicpr.../acidbase.html

    Althought that page is a bit poo because it only talks about amino acids as zwitterions. In short, the acid protonates the amino group to give NH3+ :awesome:
 
 
 
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