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MissPhiladelphia

I think the correct answer from the choices listed above is the last option. The formula for  phosphorous acid is H3PO3. It also called orthophosphorous acid, one of several oxygen acids of phosphorus, used as reducing agent in chemical analysis. Hope this answers the question.

Eduard22sly

The formula for the phosphorous acid which dissolves in water is H₃PO₃

What is an acid?

An acid is a substance which dissolves in water to produce hydronium ion (H₃O⁺) as the only positive ion. This is illustrated by the following equation

HA + H₂O --> H₃O⁺ + A⁻

Formula for phosphorous acid

The formula for phosphorous acid also known as phosphonic acid is given as H₃PO₃

Learn more about acid:

https://brainly.com/question/3700851

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