Question $1$

Write physico$-$chemical equilibrium equations that describe the

a$)$ transfer of hydrogen sulfide from gas to water, dissociation of dissolved hydrogen sulfide to bisulfide ion $(H{S}^{-}),$ and dissociation of bisulfide to sulfide $(S^{2-}).$

b$)$ transfer of carbon dioxide from gas to water, dissociation of dissolved carbon dioxide to bicarbonate ion $(HC{O}_3^{-}),$ and dissociation of bicarbonate to carbonate $(C{O}_3^{2-}).$