Question

Which of the following statements is true for dihydrogen? (A) It is a stable oxide and gives a peroxide. (B) It is an unusable oxide and gives a stable peroxide. (C) It violently reacts with dioxygen at normal temperature. (D) It gives unstable peroxide.

Answer 1

The statement “D” is correct.It gives unstable peroxide.Hydrogen peroxide, contains not two O2−OX2− units but a single O22−OX2X2− unit, as is evident from the figure  below.

IT comprise  of two oxygen bound to each other.

This means that oxygen’s oxidation state is −I−I rather than −II−II and that hydrogen peroxide can easily get  reduced.

It can also easily oxidized back into O2O X2. The functional group O−OO−O is labelled peroxide and it would not feature as oxides.

Hydrogen peroxide is highly unstable and slowly decomposes by a catalyst. Because of its instability, hydrogen peroxide is typically stored with a stabilizer.

Hydrogen peroxide is thermodynamics unstable and decomposes to form water and oxygen :

Answer 2

(d) it gives unstable peroxide