Fundamentholfundamenthol
JEE Main2019Chemistry
Q.

Which amongst the following is the strongest acid ?

  1. A

    CHI3

  2. B

    CHCI3

  3. C

    CHBr3

  4. D

    CH(CN)3

Solution

Of the given compounds CH(CN)3 is strongest acid because its conjugate base is stabilised by resonance

CHBr3 and CHI3 are less stable as their conjugate bases are stabilised by inductive effect of halogens. Conjugate base of CHCl3 involves back bonding between 2p and 3p orbitals.

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