define zwitter ion(explain)

Asked by  | 12th Aug, 2012, 12:12: AM

Expert Answer:

A molecule or ion having separate positively and negatively charged groups.

Amino acids are the best-known examples of zwitterions. These compounds contain an ammonium and a carboxylate group, and can be viewed as arising via a kind of intramolecular acid-base reaction: The amine group deprotonates the carboxylic acid.

NH2RCHCO2 NH3+RCHCO2–  zwitter ion

Answered by  | 12th Aug, 2012, 08:59: AM

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