ANSWER
H3P is an acid
EXPLANATION
An acid is a substance that will produce hydrogen ions as the only positive ion when dissolved in water.
When H3P is dissolved in water, the below reaction will be generated
[tex]H_3P+H_2O\text{ }\rightarrow2H_2\text{ + POH}[/tex]From the reaction, you will see that the reaction between H3P and water generated hydrogen ion
Therefore, H3P is an acid
