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Amines — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryAmines1 Mark
MCQ
What is the decreasing order of basicity?
  • A
    $ \mathrm{NH}_3 > \mathrm{C}_2 \mathrm{H}_5 \mathrm{NH}_2 > \left(\mathrm{C}_2 \mathrm{H}_5\right)_2 \mathrm{NH} > \left(\mathrm{C}_2 \mathrm{H}_5\right)_3 \mathrm{~N} $
  • B
    $ \left(\mathrm{C}_2 \mathrm{H}_5\right)_3 \mathrm{~N} > \left(\mathrm{C}_2 \mathrm{H}_5\right)_2 \mathrm{NH} > \mathrm{C}_2 \mathrm{H}_5 \mathrm{NH}_2 > \mathrm{NH}_3 $
    ​
  • ✓
    $ \left(\mathrm{C}_2 \mathrm{H}_5\right)_2 \mathrm{NH} > \mathrm{C}_2 \mathrm{H}_5 \mathrm{NH}_2 > \left(\mathrm{C}_2 \mathrm{H}_5\right)_3 \mathrm{N} > \mathrm{NH}_3 $
    ​
  • D
    $ \left(\mathrm{C}_2 \mathrm{H}_5\right)_2 \mathrm{NH} > \mathrm{C}_2 \mathrm{H}_5 \mathrm{NH}_2 > \mathrm{NH}_3 > \left(\mathrm{C}_2 \mathrm{H}_5\right)_3 \mathrm{N}$
✓

Answer

Correct option: C.
$ \left(\mathrm{C}_2 \mathrm{H}_5\right)_2 \mathrm{NH} > \mathrm{C}_2 \mathrm{H}_5 \mathrm{NH}_2 > \left(\mathrm{C}_2 \mathrm{H}_5\right)_3 \mathrm{N} > \mathrm{NH}_3 $
​

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