KnowraHypophosphorous acidLinked fromLinked fromThe 4 pages that link to Hypophosphorous acid, each with the reason it gives.All 4Broader topic 2Compared with 2Phosphoric acidCompared with: It has fewer ionizable protons and a lower phosphorus oxidation state than phosphoric acid.Phosphorous acidCompared with: It has stronger reducing character than phosphorous acid because it contains two P–H bonds.