Search results
Phosphorous acid (or phosphonic acid) is the compound described by the formula H 3 PO 3. This acid is diprotic (readily ionizes two protons), not triprotic as might be suggested by this formula. Phosphorous acid is an intermediate in the preparation of other phosphorus compounds.
Phosphorous acid (H3PO3), one of several oxygen acids of phosphorus, used as reducing agent in chemical analysis. It is a colourless or yellowish crystalline substance (melting point about 73° C, or 163° F) with a garliclike taste. An unstable compound that readily absorbs moisture, it is converted.
Find the relative strength of acids and bases using this chart that includes the K a value and the chemical formula. H3PO3 is a weak acid with a K a value of 6.2 * 10 -8 and a conjugate base of HPO4 2-.
Potassium phosphite is a convenient precursor to phosphorous acid: K 2 HPO 3 + 2 HCl → 2 KCl + H 3 PO 3. In practice aqueous potassium phosphite is treated with excess hydrochloric acid. By concentrating the solution and precipitations with alcohols, the pure acid can be separated from the salt. Acid-base properties
Phosphorous acid is a diprotic oxyacid of phosphorus with the chemical formula H3PO3. It is a strong reducing agent and forms salts called phosphites. Learn more about its preparation, reactions and applications.
Phosphorous acid (H3PO3) is a diprotic acid that can be prepared by reacting white phosphorus or phosphorus trichloride with water. It has various applications in industry, agriculture, and medicine, but also poses some safety and environmental concerns.
Having a high valence is a main requirement to be a center atom. For H 3 PO 3 molecule, phosphorous has the highest valence than oxygen and hydrogen. Because, phosphorous acid is a dibasic acid, it can release two H + ions in the water. Therefore, there should be two -OH groups in H 3 PO 3 molecule.
