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Amines — Chemistry STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceChemistryAmines1 Mark
MCQ
Which one of the following is the weakest base?
  • A
    (C2​H5​)3​N
  • B
    (C2​H5​)2​NH
  • C
    C2​H5​NH2​
  • D
    NH3​
     
✓

Answer

  1. NH3

Explanation:

The +I effect increases with increase in the alkyl group. Therefore the basic strength will be the highest in (C2​H5​)3N and least in NH3​.

Therefore the decreasing order of basic strength in gas phase will be (C2​H5​)3N > (C2​H5​)2NH > C2​H5​NH2 ​> NH3​.

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