Name the species formed when glycine is dissolved in water
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An amino acid has both a basic amine group and an acidic carboxylic acid group. When the aqueous solution of amino acid is dissolved in water, there is an internal transfer of a hydrogen ion from the -COOH group to the -NH2 group to leave an ion having both negative charge and positive charge. This ion is called a
zwitterion or even a dipolar ion.
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Zwitter ion is the species formed when glycine is dissolved in water.
Explanation:
- Glycine is the simplest amino acid. When glycine is dissolved into water, the amine group accepts the hydrogen ion present in the carboxylic acid.
- As a result the amine group gets a positive charge and the carboxylic group attains a negative charge. This occurs due to the change in the pH of the solution.
- The compound has both "positive and negative charges" present in it but it is stable at that pH. This type of ion formation is known as zwitter ion.
- The overall molecule is neutral in charge but it has the presence of "both positive and negative charges" in equal amount in the groups of the compound.
To know more:
Name the species formed when an aqueous solution of amino acid is dissolved in water....
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