Question

Trihydrogen monophosphide is a covalent molecule that can also act as an acid. What is the correct acid name for trihydrogen monophosphide ?

Answer 1

The correct acid name for trihydrogen monophosphide is phosphoric acid
`(H3PO4)`. Phosphoric acid is a covalent molecule that can act as an acid. It is a triprotic acid because it has three acidic protons that can be donated.

Step-by-step explanation:

The correct acid name for trihydrogen monophosphide is phosphoric acid
`(H3PO4).`

Phosphoric acid is a covalent molecule that can act as an acid. It is a triprotic acid because it has three acidic protons that can be donated.

When phosphoric acid dissociates, it donates three protons:

`H3PO4 -- H+ + H2PO4-`

`H2PO4- -- H+ + HPO42-`

`HPO42- -- H+ + PO43-`

Answer 2

H₃P phosphidic acid

Step-by-step explanation:

The Trihydrogen monophosphide, as stated in the exercise, can act as an acid. This is pretty similar to the case of hydrogen chloride, which is a gas but it can also be an acid, in this case, chloridic acid.

In the case of trihydrogen phosphide, we can write it molecular formula which is:

H₃P

Now, this is a binary compound because its composed of only two elements, in this case, hydrogen and phosphide. To name binary acid, we need to name the non metal with the sufije idic, and then, the word acid.

Following this simple rule, the trihydrogen phosphide would be, as acid:

H₃P: phosphidic acid

Hope this helps