JEE Main | 2018Hydrogen and its compoundHard

Question

Hydrogen peroxide oxidises [Fe(CN)6]4- to [Fe(CN)6]3- in acidic medium but reduces [Fe(CN)6]3- to [Fe(CN)6]4- in alkaline edium. The other products formed are, respectively :

Options

A.

(H2O + O2) and (H2O + OH-)

B.

H2O and (H2O + O2)

C.

H2O and (H2O + OH-)

D.

(H2O + O2) and H2O

Solution

(i) [Fe+2 (CN)6]4- + H2O2-1 + 2H+
                    ↓
[Fe+3 (CN)6]3- + 2H2O-2
                    ↓
(ii)  [Fe+3 (CN)6]3- + H2O2-1 + 2OH-
                    ↓
[Fe+2 (CN)6]4- + O20 + 2H2O

Create a free account to view solution

View Solution Free
Topic: Hydrogen and its compound·Practice all Hydrogen and its compound questions

More Hydrogen and its compound Questions

Among the following insecticide is :...The complex ion which has no ′d′ - electrons in the central metal atom is :...1-Butyne can be distinguished most easily from 2-butyne by...Calculate the amount of ammonium chloride required to dissolve in 500 ml water to have pH = 4.5 (Kb for NH4OH is 1.8 &#2...On heating ammonium dichromate, the gas evolved is :...