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JEE Main 20169 AprilOnline
Exam
JEE Main
Year
2016
Date
9 April
Mode
Online
Subject
Chemistry
Chapter
Biomolecules

JEE Main 2016 · 9 April · Online · Chemistry · Biomolecules

Consider the following sequence for aspartic acid: The pH...

Consider the following sequence for aspartic acid:

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

The pH (Isoelectric point) of aspartic acid is:

Options

  1. A3.65
  2. B2.77
  3. C5.74
  4. D1.88

Correct answer

B. 2.77

Step-by-step solution

pH=pK1+pK22pH = \dfrac{p{K}_{1} + p{K}_{2}}{2}

=1.88+3.652= \dfrac{1.88 + 3.65}{2}

=5.532= \dfrac{5.53}{2}

=2.765≈2.77= 2.765 \approx 2.77

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