Question

Redox reactions are everywhere! Your body uses redox reactions to convert food and oxygen to energy plus water and carbon dioxide which we then exhale. The batteries in your electronics also rely on redox reactions.
1) What are redox reactions?
2) On the basis of electron concept, identify reduction,oxidation,oxidizing
agent and reducing agent in the given equation:

a) CuO + H2 → Cu + H2O
b) Fe + CuSO4 → FeSO4 + Cu
c) MnO2 + 4HCl → MnCl2 + Cl2 + 2H2O
d) H2S + I2 → 2HI + S

Answer 1

Explanation:

a redox reaction is reaction in which Oxidation and reduction takes places simultaneously . As a result product formed will be because of both oxidation and reduction

CuO + H2 → Cu + H2O -------> its a  redox reaction

Explanation:

as CuO is reduced and H2 is oxidized so

so

CuO is oxidizing  agent and H2 is reducing agent

Fe + CuSO4 → FeSO4 + Cu

Explanation:

Fe + CuSO4 → FeSO4 + Cu-------> its a redox

CuSO 4 is an oxidizing agent, Fe is a reducing agent.

MnO2 + 4HCl → MnCl2 + Cl2 + 2H2O

Explanation:

MnO2 + 4HCl → MnCl2 + Cl2 + 2H2O-------> its a redox

mno2 is oxidizing agent and hcl is reducing agent

H2S + I2 → 2HI + S

Explanation:

H2S + I2 → 2HI + S  -------> its a redox

h2s is reducing agent and i2 is oxidizing agent