" The strongest conjugate base is "

The equilibrium constant for the reaction HCO_(3)^(-)(aq)+HPO_(4)^(2-)(aq) iff CO_(3)^(2-)(aq)+H_(2)PO_(4)^(-)(aq) is approximately 10^(-3) . The strongest conjugate base in this reaction is

Which of the following is the strongest conjugate base ?

The strongest conjugate base results from

The strongest conjugate base results from

Pick the strongest conjugate base among the following

Oxygen is more electronegative than chloride. In the series of oxyacids HOCI, HCIO_(2) , HCIO_(3) and HCIO_(4) , an increasing number of oxygen atom is bonded to the chlorine atom. Chlorine forms a number of oxyacids which differ in their stability order. Which of the following is the strongest conjugate base ?