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In an amino acid, the carboxyl group ion...

In an amino acid, the carboxyl group ionises at `pK_(a1) = 2.34` and ammonium ion at `pK_(a2) = 9.60`. The isoelectric point of the amino acid is at pH

A

`5.97`

B

`2.34`

C

`9.60`

D

`6.97`

Text Solution

Verified by Experts

The correct Answer is:
A
Isoelectric point ( pH) `=(pK_(a_1) + pK_(a_2))/(2) = ( 2.34 + 9.60)/(2) = 5.97`
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