Identify the substances that are oxidised and the substances that are reduced in the following reactions.

(i)

(ii)

Q. What are redox reactions? Identify the substances that are oxidised and the substances that are reduced in the following reactions?
A. $2H_2{S}_{\left(g\right)}+S{O}_{2\left(g\right)}\to 3S_{\left(s\right)}+2H_2{O}_{\left(1\right)}$
B. $Cu{O}_{\left(s\right)}+H_{2\left(g\right)}\to C{u}_{\left(s\right)}+H_{2}O$

Q.

Identify the oxidised and reduced substances in the following reaction:

$4Na\left(s\right)+O_2\left(g\right)\to 2N{a}_{2}O\left(s\right)$

Q. Question 3.1
Identify the substance that is oxidized and the substance that is reduced in the following reaction:

$4\text{Na (s)}+{\text{O}}_2\text{(g)}\to 2{\text{Na}}_2\text{O(s)}$

Q.

Identify the substance that is oxidised and the substances that are reduced in the following reactions:

$1.{\mathrm{MnO}}_2+4\mathrm{HCl}\to {\mathrm{MnCl}}_2+2H_{2}O+{\mathrm{Cl}}_{2}2.4\mathrm{Na}+O_2\to 2{\mathrm{Na}}_{2}O3.\mathrm{ZnO}+C\to \mathrm{Zn}+\mathrm{CO}$

Q. Question 3.1
Identify the substance that is oxidized and the substance that is reduced in the following reaction:

$4\text{Na (s)}+{\text{O}}_2\text{(g)}\to 2{\text{Na}}_2\text{O(s)}$