What is the chemical equation for diphosphorus trioxide + water ---> phosphorous acid?

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Answer 1 · 2014-05-13T00:47:04

Diphosphorus trioxide + water produces phosphorous acid.

Diphosphorous trioxide is a molecular (covalent) compound. Using the prefixes the molecular formula is #P_2O_3#

Phosphorous acid is #H_3PO_3#

#P_2O_3 + H_2O -> H_3PO_3#

To balance this equation we begin be adding a coefficient of 2 in front of the phosphorous acid.

#P_2O_3 + H_2O -> 2H_3PO_3#

We balance the hydrogen by adding a coefficient of 3 in front of the water.

#P_2O_3 + 3H_2O -> 2H_3PO_3#

I hope this was helpful.
SMARTERTEACHER