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Write the structure of alanine at pH=2 a...

Write the structure of alanine at `pH=2 and pH=10`.

Text Solution

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At `pH=2`, basic `NH_(2)` reacts with `H^(o+)`. Since `pH=2` is acidic.
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Knowledge Check

  • Correct structure of glycine at pH = 7 is :

    A
    `H_(3)overset(o+)N-CH_(2)COO^(Θ)`
    B
    `Noverset(o+)H_(3)-CH_(2)-COOH`
    C
    `NH_(2)-CH_(2)-COOH`
    D
    `NH_(2)CH_(2)COO^(Θ)`

  • Which of the following is correct structure of histidine at pH=0?

    A
    B
    C
    D

  • The incorrect structure of glycine at given pH are :

    A
    `H_(3)overset(o+)(N)CH_(2)-underset(underset(O)(||))(C)-OH" at"pH=2.0`
    B
    `H_3overset(o+)(N)CH_(2)-underset(underset(O)(||))(C)-O^(ɵ)" at "pH=6.0`
    C
    `H_(2)NCH_(2)-underset(underset(O)(||))(C)-O^(ɵ)" at "pH=9`
    D
    `H_(2)NCH_(2)-underset(underset(O)(||))(C)-OH" at "pH=12`

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    The incorrect structure of glucine at given pH are-

    Which of the following is the major solute species in a solution of alanine at pH=2 ?

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