KnowraPhosphorous acidLinked fromLinked fromThe 7 pages that link to Phosphorous acid, each with the reason it gives.All 7Broader topic 1Related 3Compared with 3Phosphoric acidCompared with: Its lower oxidation state and dibasic behavior distinguish it from triprotic phosphoric acid.Phosphorus trichlorideRelated: It is a principal product when PCl₃ reacts with water.Phosphorus oxyacidsBroader topic: Its P–H bond leaves it diprotic despite its three hydrogen atoms.Hypophosphorous acidCompared with: Its intermediate structure shows how replacing P–H with O–H changes acidity and redox behavior.Arsenous acidCompared with: Its analogous name masks a structural difference: phosphorous acid has one P–H bond, unlike As(OH)₃.Phosphorus trioxideRelated: It is the principal product when phosphorus trioxide reacts with water.Basic lead phosphiteRelated: It is the acid component from which basic lead phosphite salts are formed.