Question

Which one is the oxidising agent in the reaction
given below
2Cro4^-2+ 2H+ + Cr2O7^-2 + H2O
(1) H+
(2) Cr2O7^-2
(3) Cr++
(4) None​

Answer 1

Answer:

I'll assume that the reaction you've given is written in the usual way here.

In this case the oxidising agent is obviously the Hydrogen ion. The Cr goes from the +3 oxidation state to +6 in this reaction, in other words, oxidation. Ergo, Hydrogen ion is the oxidising agent