Why h3po3 is dibasic acid

Questions from The p-Block Elements - Part2. The oxoacid of phosphorus that reduces silver nitrate into metallic silver is KEAM The basicity of pyrophosphorous acid is KEAM The oxidation state of phosphorus in cyclotrimetaphosphoric acid is KEAM Which of the following is a tribasic acid?

The maximum number of P-H bonds are contained in which of the following molecules? AMU AIIMS Which of the following will not be oxidized by ozone? Chemistry Most Viewed Questions. Identify a molecule which does not exist. Identify the incorrect match.

Which of the following set of molecules will have zero dipole moment? Example: Phosphoric acid, phosphorus acid. Explanation: Ortho Phosphorous acid is an acid as it dissolves in water to form hydrogen ions. It is because only one of the hydrogen in is acidic which is bonded to oxygen. The hydrogen directly attached to phosphorous is not acidic and thus cannot be donated.

In case of acids if a central atom is present in its maximum oxidation state then it cannot further increase its oxidation state. So, it would not act as a reducing agent. Hence H3PO3 will act as a reducing agent. So they can act as reducing agents. Hence H3PO4 cannot serve as a reducing agent.

So the oxoacid of phosphorus which is a reducing agent and a monobasic acid as well is hypophosphoric acid. Hence option D is correct.