Which of the following statements is not correct for hypophosphoric acid?

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It is formed when white phosphorus partially immersed in water is allowed to oxidize in a limited supply of air

It is a tribasic acid

In warm water it undergoes hydrolysis producing phosphorous acid and phosphoric acid

It has no reducing characteristics

answer is B.

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Detailed Solution

Statement B is not correct for hypophosphoric acid, It is a tribasic acid.

Red phosphorus and sodium chlorite can be combined at room temperature to create hypophosphoric acid. White phosphorus oxidizes in air when submerged in water, releasing a combination of hypophosphoric acid, phosphorous acid $(H 3 {PO}_{3})$ , and phosphoric acid $(H 3 {PO}_{4})$ .

So, it is a tribasic acid.

Hence, the option B is correct.

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