Question

which of the following molecules can act as an oxidising as well as reducing agent ?
a. H2S
b. SO3
c. H2O2
d.F2​

Answer 1

Answer:

c. H202 because it contains both hydrogen and oxygen

Answer 2

AnSwer :-

$\Large \star$The species of which an element has oxidation number lying in between its minimum and maximum values can act as oxidant and reductant both.

Oxidation state in species O$^{-1}$ in H$_2$O$_2$

Minimum oxidation state -2

Maximum oxidation state 00

Thus, hydrogen peroxide (H$_2$O$_2$) can act as an oxidising as well as reducing agent.

H$\bf _{2}$O$\bf _{2}$ as an reducing agent :-

$\sf Ag_2O + H_2O_2 \longrightarrow 2Ag + H_2O + O_2$

H$\bf _{2}$O$\bf _{2}$ as an oxidising agent :-

$\sf PbS + 4H_2O_2 \longrightarrow PbSO_4 + 4H_2O</p><p>$

Thus, Option (c) H$_2$O$_2$ is correct.