Phosphoric acid is preferred over sulphuric acid in preparing hydrogen peroxide from peroxides. Why ?

Phosphoric acid is preferred over sulphuric acid in preparing hydrogen

1.	Phosphoric acid is preferred over sulphuric acid in preparing hydrogen peroxide from peroxides. Why ?
Answer» Solution :`H_2SO_4` acts as a catalyst for decomposition of `H_2O_2`. THEREFORE, some weaker acids such as `H_3PO_4` is PREFERRED over `H_2SO_4` for preparing `H_2O_2` from PEROXIDES. `2BaO_2 + 2H_3PO_4 to Ba_3(PO_4)_2 + 3H_2O_2`