Manisha posted an Question
December 23, 2020 • 23:14 pm 30 points
  • IIT JAM
  • Chemistry (CY)

2 the correct order of the pka values for the conjugate acids of heterocyclie compounds given below is (11) n h h () i1> ii1>1>iv (6)iv> ii> i1>i ()i1>i2iv>i ()

2 The correct order of the pKa values for the conjugate acids of heterocyclie compounds given below IS (11) N H H () I1> II1>1>IV (6)IV> II> i1>I ()I1>I2IV>I ()I1>IV> I>I

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    Dinesh khalmaniya 1 Best Answer

    option C II and III freely available lone pair here we will see the ring size. more the ring size, lss is the strain and more will be the Basicity so III>II. Now if we talk about I and IV, I have lone pair which is delocalised in the ring make it aromatic so lone pair is not freely available so least Basic while IV has -I effect. so I>IV. Overall III>II>IV>I

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