Embibe Experts Solutions for Chapter: Redox Reactions, Exercise 1: Exercise-1

The oxidation number of oxygen in ${\mathrm{Na}}_2{\mathrm{O}}_2$ is _____ .

In the reaction ${\mathrm{X}}^{-}+{\mathrm{XO}}_3^{-}+{\mathrm{H}}^{+}⟶{\mathrm{X}}_2+{\mathrm{H}}_2\mathrm{O},$ the molar ratio in which ${\mathrm{X}}^{-}$ and ${\mathrm{XO}}_3^{-}$ react is

Justify that the following reaction are redox reaction:

${\mathrm{CuO}}_{\left(\mathrm{s}\right)} + {\mathrm{H}}_{2\left(\mathrm{g}\right)} \to {\mathrm{Cu}}_{\left(\mathrm{s}\right)} + {\mathrm{H}}_2{\mathrm{O}}_{\left(\mathrm{g}\right)}$

The atomic number of an element which can not show the oxidation state of $+3$ is:-

The most common oxidation state of an element is $–2.$ The number of electrons present in its outer most shell is:-

Most stable oxidation state of gold is:

Which metal exhibtis more than one oxidation states in their compounds?

If $0.224 \mathrm{L}$ of ${\mathrm{H}}_2$ gas is formed at the cathode, the volume of ${\mathrm{O}}_2$ gas formed at the anode under identical conditions, is