What is a redox reaction? Explain with an example.
(b) When a magnesium ribbon burns in air with a dazzling flame and forms a white ash, is magnesium oxidised or reduced? Why?
(c) In the reaction represented by the equation:
MnO2 + 4HCl → MnCl2 +2H2O +Cl2
(i) Name the substance oxidized (ii) Name the oxidizing agent

Name the substance reduced (iv) Name the reducing agent

Question

What is a redox reaction? Explain with an example.
(b)	When a magnesium ribbon burns in air with a dazzling flame and forms a white ash, is magnesium oxidised or reduced? Why?
(c)	In the reaction represented by the equation:
MnO2 + 4HCl → MnCl2 +2H2O +Cl2
(i)	Name the substance oxidized	(ii) Name the oxidizing agent
 
Name the substance reduced	(iv) Name the reducing agent

MyClass24 · Accepted Answer

A redox reaction is a reaction where oxidation and reduction occurs It is also called redox reaction.

SO3(aq) + MnO4(aq) &rarr; SO4(aq) + Mn
Oxidation happened for SO3and reduction happened for MnO4

Magnesium is oxidised as addition of oxygen to magnesium takes place leading to formation of magnesium oxide.
(i) HCl (ii) MnO2(iii) MnO2 (iv) HCl