Question

The acid which gives phosphine on heating is formula

Answer 1

Phosphorus acid gives phosphine on heating

Answer 2

The acid which gives phosphine on heating is formula phosphorous acid.

Explanation:

Phosphine has a chemical formula ($PH3$) is a chemical compound.

It is prepared by heating phosphorous acid $H3PO3$

In phosphorous acid central atom P is in +3 oxidation state.

It may also be prepared by reacting calcium phosphide with water.

In organophosphorus compounds, Phosphine holds its place.

It was Philippe Gengembre who discovered phosphine in 1783.

It can be found in human tissues, blood, urine, saliva, etc.