Question

(a) What are redox reactions?
(b) Why is the reaction between manganese dioxide and hydrochloric acid called a redox reaction?
(c) Identify the oxidising agent and the reducing agent in the above reaction.

Answer 1

Answer:

When Manganese oxide reacts with hydrochloric acid, it gives manganese chloride, water and chlorine gas. Here, in this reaction, manganese oxide reduced to manganese chloride because it loses oxygen. ... Hence, this is a redox reaction or oxidation reduction reaction.

Answer 2

Answer:

Explanation:

When Manganese dioxide reacts with HCl, it gives chlorine gas, water and MnCl

2

​

. MnO

2

​

 is the oxidising agent as it oxidises HCl to Cl

2

​

 which loses the hydrogen atom