Amino Acids & Zwitter Ions

Rarely Tested

General Structure:

$$\text{R--CH(NH}_2)\text{COOH}$$

Zwitter Ion: Dipolar ion formed by internal proton transfer from carboxylic group to amino group:

$$\text{R--CH(NH}_2)\text{COOH} \rightleftharpoons \text{R--CH(NH}_3^+)\text{COO}^-$$

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