Question

define Oxidising and reducing agent with reactions

Answer 1

Oxidation : In the electronic concept, oxidation is defined as a process in which an atom or an ion loses electrons
(a) addition of oxygen :
C+O2 gives arise to CO2
(b) removal of hydrogen :
H2S+ Cl2 gives arise to 2HCl+S

Reduction: IN the electronic concept, reduction is defined as a process in which an atom or an ion loses electrons
(a) Removal of oxygen :
CuO + H2 gives arise to Cu+ H2O
(b) addition of hydrogen :
Cl2+ H2S gives arise to S+ 2HCl

Answer 2

Answer:

(i) Oxidising agent: A substance which increases the oxidation number of an element.in a given substance and itself undergoes a decrease in oxidation number of a constituent element is called an oxidising agent.

(ii) Reducing agent: A substance which decreases the oxidation number of an element in a given substance and itself undergoes an increase in the oxidation number of a constituent element in it is called a reducing agent