. The strongest conjugate base is
Correct Option is (d) :
The capacity of an acid to lose a proton is used to determine its strength. Strong acids totally ionise in water, whereas weak acids partially dissociate in water and form equilibrium with both the acid and conjugate base in the solution.
Because it does not release all of its hydrogen in water, acetic acid is classified as a weak acid. Instead, it dissociates partially and creates equilibrium with its conjugate base.
Strong conjugate base has a weak conjugate acid . Since CH3COOH is weakest acid, therefore its conjugate base.