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Electrical Properties of Colloids

Define isoele...

Question

Define isoelectric point of amino acid. The isoelectric point of alanine is $6.1$ . Write the molecular from of alanine at $p H 5$ .

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Solution

Isoelectric point is pH at which a molecule carries no net electrical charge or is electrically neutral in statistical mean.
Given p $^{I}$ of Alanine is 6.1.

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Q. Alanine, at its isoelectric point, exists in solution as :

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p K_{a 1} = 2.3 and p K_{a 2} = 9.7

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