Question

among the following whose pka is minimum
a)C6H5OH
b)HCOOH
c)C2H5OH
d)CH3C triple bond CH

Answer 1

as pka=-log 10 {ka) .............so A/c to this u have to check order of all of these

Answer 2

but u dont have this value of ka and all that then how can u find??
less pka means high acidic right but how u find i mean in a) there is reso

Answer 3

then ans is d

Answer 4

as for case "d" less acidic so high pka .right ?

Answer 5

yes but here its asking min. pka and ur ans is right :)