Respuesta :

Edufirst
1) Equilibrium reaction:

[tex]H_2SO_3=H^++HSO_3^-[/tex]

2) Equilibrium constant

[tex]Ka= \frac{[H^+][HSO_3^-]}{[H_2SO_3]} [/tex]

The answer is the second option but it has a mistake because it is the ion HSO3 has oxidation state 1- and not 2-.