Nothing, because they do not react with each other.
Phosphoric acid
When zinc reacts with phosphoric acid, hydrogen is evolved and zinc phosphate is formed.
phosphoric acid
H3PO4============Commonly called phosphoric acid.
H3PO4, also known as phosphoric acid, is an acid. It's a triprotic acid, meaning it can donate three protons in a solution. Its acidic nature is evident in its ability to release hydrogen ions (H⁺) in water, making it a crucial component in various industries and as a flavoring agent in food and beverages. As an acid, it plays a significant role in buffering systems and chemical reactions due to its acidic properties.
Phosphoric acid
H3PO4 (3 hydrogen 4 phosphoric oxygen)
When zinc reacts with phosphoric acid, hydrogen is evolved and zinc phosphate is formed.
phosphoric acid
Phosphoric acid.
phosphoric acid
coke
The product is Ethanol. Phosphoric acid is the catalyst here. The equation for the reaction is: C2H4 + H2O -----> C2H5OH
It corrodes it because it includes oxygen and hydrogen.
Acidic.
In Aqueous medium, phosphoric acid emits 3 hydrogen ions. Hydrochloric acid emits only 1 hydrogen ion. So phosphoric acid is more acidic. So it is chosen over HCl.
H3PO4============Commonly called phosphoric acid.