Chemistry - Ionic Equilibrium Question with Solution | TestHub

Match the effect of addition of 1 M NaOH to 50 mL of $1\mathrm{M}{\mathrm{H}}_2{\mathrm{C}}_2{\mathrm{O}}_4$ (diprotic acid) in column I with column II (Given : $K_{a_1}=10^{-4},K_{a_2}=10^{-9}$ ):

Codes:

P Q R S