Question

SO₂ can act as oxidising and reducing agent both but HNO3 can act as only oxidising agent only why?​

Answer 1

Answer:

SO2 can act as both oxidizing as well as reducing agent since it has +4 oxidation state which is exactly between its highest oxidation state +6 and lowest oxidation state +2 ,Thus it can change its oxidation number either from +4 to-2(reduction) and +4 to+6 (oxidation).