Identify the substance oxidized reduced, oxidizing agent and a reducing agent for each of the following reactions:
HCHO(l) + 2[Ag (NH3)2] + (aq) + 3OH– (aq) → 2Ag(s) + HCOO– (aq) + 4NH3(aq) + 2H2O(l)
Oxidised substance:-HCHO
Reduced Substance:- [Ag (NH3)2] +
Reducing agent:-HCHO
Oxidising agent:- [Ag (NH3)2] +
Explanation:- Oxidising agent is a reagent which can increase the O.N. of an element in a given substance.
Here, [Ag (NH3)2] + helps HCHO to increase its oxidation state.
The reduced substance is a reagent whose oxidation state has been decreased.
Here, in this case, Ag in [Ag (NH3)2] + has + 1 oxidation state and the O.N. is reduced to zero as Ag in the product side is present in zero O.N. (its elemental form)
The oxidised substance is a reagent whose oxidation state has been decreased.
Carbon in HCHO is present in zero oxidation state which is increased to + 2 in HCOO-.
Reducing Agent is a reagent which lowers the oxidation number of an element in a given substance.
HCHO helps [Ag (NH3)2]+ to decrease its oxidation state.