The p K a 1 and p K a 2 of an amino acid are 2.3 and 9.7 respectively. The isoelectric point of the amino acid is

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Question: Answered & Verified by Expert

The

p K_{a_{1}}

and

p K_{a_{2}}

of an amino acid are 2.3 and 9.7 respectively. The isoelectric point of the amino acid is

ChemistryBiomoleculesNEET

Options:

A 7.4
B 3.5
C 12.0
D 6.0

Solution:

2102 Upvotes Verified Answer

The correct answer is: 6.0

Isoelectric point

= \frac{p {K_{a}}_{_{1}} + p {K_{a}}_{_{2}}}{2} = \frac{2.3 + 9.7}{2} = 6

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