Iso-electric point of alanine is $(pH = 6)$. At which $pH,$ maximum concentration of zwitter ion of alanine will be present ?
A$pH > 6$
B$pH < 6$
C$pH = 6$
D$pH = 7$
Medium
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C$pH = 6$
c $(c)$ At isoelectric point, cone. of Zwitter ion will maximum.
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Assertion : At isoelectric point, the amino group does not migrate under the influence of electric field.
Reason : At isoelectric point, amino acid exists as a zwitterion