Question

Which of the following is true of oxidation-reduction reactions?
(A) The reducing agent is reduced at the cathode.
(B) The oxidizing agent is oxidized at the Anode.
(C) The oxidizing agent is reduced at the Cathode.
(D) The reducing agent is oxidized at the Cathode.

Answer 1

Hint: A reaction in which oxidation and reduction take place simultaneously is termed as a redox reaction .
Oxidising and reducing agents are responsible for carrying out these reactions .

Complete step by step answer:
Oxidation is the process of addition of oxygen atom or removal of hydrogen atom whereas reduction is the process of removal of oxygen or addition of oxygen atom .They occur in the presence of oxidising or reducing agents respectively. When oxidation and reduction both occur simultaneously in a reaction it is called a redox reaction.
Oxidizing agents are the substances which get reduced by losing electrons and on the other hand oxidised the other species.
Reducing Agent is oxidized when it loses electrons in the redox reaction.
A redox reaction is also called oxidation-reduction reaction. In redox reaction the oxidation number increases during oxidation and decreases on the reduction. Redox reactions are very common and vital to some of the basic functions of life such as photosynthesis, respiration, combustion, and corrosion or rusting .
Example of Redox reaction :
$2Al + F{e_2}{O_3} \to A{l_2}{O_3} + 2Fe$

Here we can see that $Al$ reduces $F{e_2}{O_3}$ to $Fe$ while itself gets oxidised to $A{l_2}{O_3}$ . Conversely , ferric oxide oxidises aluminium to aluminium oxide and itself gets reduced to $Fe$ . Therefore , we can say that $Al$ acts as a reducing agent while $F{e_2}{O_3}$ acts as an oxidising agent .
Thus from the above discussion we can say that reducing agent gets reduced at cathode .

So, the correct answer is Option A.

Note: Electrochemistry is the study of chemical processes that cause electrons to move. This movement of electrons is called electricity, which can be generated by movements of electrons from one element to another in a reaction known as an oxidation-reduction ("redox") reaction.