Name one example of a reaction in which dihydrogen acts (i) as an oxidising agent and (ii) as a reducing agent.

Name one example of a reaction in which dihydrogen acts (i) as an oxid

1.	Name one example of a reaction in which dihydrogen acts (i) as an oxidising agent and (ii) as a reducing agent.
Answer» Solution :(i) In the reaction of dihydrogen with metals of form METAL hydrides, it acts as an oxidising agent `2NA (s) + H_(2) (g) overset("Heat")to 2Na^(+)H^(-) (s)` Here, Na has been oxidised to `Na^(+)` while dihydrogenhas been reduced to hydride `(H^(-))` ion. (ii) In the reaction of HEATED CUPRIC oxide with dihydrogen to form `H_(2)O` and copper metal, dihydrogen acts as a redcuing agent. `CuO(s) + H_(2)(s) overset("Heat")to Cu(s) + H_(2)O(g)` Here, CuO is reduced to Cu while dihydrogen is oxidised to `H_(2)O`