Consider the following sequence for aspartic acid: The pH (Isoelectric point) of aspartic acid is:

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Consider the following sequence for aspartic acid:

The pH (Isoelectric point) of aspartic acid is:

ChemistryBiomoleculesJEE MainJEE Main 2016 (09 Apr Online)

Options:

A 3.65
B 2.77
C 5.74
D 1.88

Solution:

1870 Upvotes Verified Answer

The correct answer is: 2.77

p H = \frac{p K_{1} + p K_{2}}{2}

= \frac{1.88 + 3.65}{2}

= \frac{5.53}{2}

= 2.765 \approx 2.77

At isoelectric point of aspartic acid both carboxylic and amino from co-exist.

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