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Engineering Chemistry · Q47

Basics of Organic Reaction Mechanism

Engineering and GATE · Engineering Chemistry · question 47

Q47

Three molecular ionic states, P-R are possible for the amino acid histidine. Identify the correct choice of pH values, respectively for the observation of the ionic states P-R.

Three molecular ionic states, P-R are possible for the amino acid histidine. Identify the correct choice of pH values, respectively for the observation of the ionic states P-R.
Basics of Organic Reaction Mechanism mcq question image
A.
P at pH 1; Q at pH 12; R at pH 7
Answer
B.
P at pH 7; Q at pH 1; R at pH 12
C.
P at pH 12; Q at pH 7; R at pH 1
D.
P at pH 12; Q at pH 1; R at pH 7

Answer: Option A

Solution

Answer: Option A
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