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STD 12 - 9. Amines — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 9. Amines4 Marks
MCQ
The correct order in aqueous medium of basic strength in case of methyl substituted amines is :
  • ✓
    $Me _2 NH > MeNH _2 > Me _3 N > NH _3$
  • B
    $Me _2 NH > Me _3 N > MeNH _2 > NH _3$
  • C
    $NH _3 > Me _3 N > MeNH _2 > Me _2 NH$
  • D
    $Me _3 N > Me _2 NH > MeNH _2 > NH _3$
✓

Answer

Correct option: A.
$Me _2 NH > MeNH _2 > Me _3 N > NH _3$
a
In aqueous medium basic strength is dependent on electron density on nitrogen as well as solvation of cation formed after accepting $H ^{+}$. After considering all these factors overall basic strength order is

$Me _2 NH > MeNH _2 > Me _3 N > NH _3$

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