Monga diprotic organic acid, oxalic acid ili ndi magulu awiri a carboxyl, zomwe zimapangitsa kuti ikhale ma atomu awiri a hydrogen omwe amatha kuionitsidwa. Mu yankho lamadzi, imagawanika kukhala ma ioni a oxalate ndi ma ioni awiri a hydrogen, monga momwe zasonyezedwera muzochita izi: Oxalic acid imagwira ntchito mwa mankhwala ndipo imatha kuchita mogwirizana ...