JEE Main Chemistry Class 11 Equilibrium Questions Part 1 Questions

Due to the resonance stabilisation of the conjugate base, CH(CN)3 is the strongest acid amongst the given compounds.
CH(CN)3⇌H++C(CN)3The conjugate bases of CHBr3 and CHI3 are stabilised by inductive effect of halogens. This is why, they are less stable. Also, the conjugate base of CHCl3 involves backbonding between 2p and 3p orbitals.