Which of the compounds would have the weakest conjugate base

Last updated: 6/28/2023

Which of the compounds would have the weakest conjugate base O cyclohexanone with a Ka 5 X 10 16 O cyclopentadiene with a Ka 1 X 10 15 acetylene with a K 1 X 10 25 2 chloroethanol with a K 2 X 10 14