JEE Main | 2018Chemical BondingEasy
Question
The predominant form of histamine present in human blood is (pKa, Histidine = 6.0)
Options
A.
B.
C.
D.
Solution
Structure of Histamine
Blood is slightly basic in nature (7.35 pH) approx.
At this pH terminal NH2 will get protonated due to more basic nature.
Predominant structure of Histamine is
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