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Which the list shown below, the correct ...

Which the list shown below, the correct pair of structures of alanine in pH ranges 2-4 and 9-11 is
I. `H_(3)N^(+)CH(CH_(3))CO_(2)H`
II. `H_(2)NCH(CH_(3))CO_(2)^(-)`
III. `H_(3)N^(+)CH(CH_(3))CO_(2)^(-)`
IV. `H_(2)NCH(CH_(3))CO_(2)H`

A

I, II

B

I, III

C

II, III

D

III, IV

Text Solution

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The correct Answer is:
A
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