F324 Jun 15 Q3

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Question covers amino acids (reactions and polymerisation)
  1. MaChemGuy
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Do more c2 experiments please! you are the best!

fpxvdesigns
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Confused as to the third mark in 3a i). H2SO4 is a strong acid, thus has a pH <1 (obviously a lower pH than that at which the Zwitterion exists), but I didn't think we had to remember the isoelectric points of amino acids. Is it assumed, in the presence of a strong acid, a given amino acid will be in its positively charged form? thanks

aranhendren
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In the very first question, wouldn't the -OH group in serine form an ionic bond with Na+ as there's 2 Na+'s? Great video btw!!!

soumare
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question (cii)
would the examiner accept instead of the ring for the poly(glutamic acid) it drawn as a polymer because that way they are still attached like a ring because I wouldn't have been able to guess that...

bintmohammed