When acid is added to an amino acid, which one of the following will act as a base?
Correct answer: B. COO_
- A. NH3+
- B. COO_
- C. H+
- D. R group
Explanation
If you decrease the pH by adding an acid to a solution of an amino acid, the -COO- part of the zwitter ion picks up a hydrogen ion, thereby acting as a base.
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About Alkyl Halides
Alkyl halides are named and related to their carbon-halogen structure, polarity and reactivity. The key reactions are nucleophilic substitution by SN1 and SN2 mechanisms and elimination by E1 and E2 mechanisms, including how substrate structure, nucleophile, base, solvent and temperature influence substitution versus elimination.
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