Question

(i)
Pet To 06781 À paa faca artis at YH ET EN EL
In the following reaction :
MnO2 + 4HCl → MnCl2 + 2H2O + Cl2
Identify the oxidant and reductant.
Give reasons :
Antioxidants are added to foods containing fats and oils.
(ii) White silver chloride turns grey in sunlight.​

Answer 1

The following reaction is associated with the given change ----

2AgCl----------Answer:

(I) In the given reaction HCl is the oxidising agent while MnO2 is the reducing agent.

(II) Antioxidants are added to foods containing fats and oils to prevent them to react with air and become rancid.

(III) White silver chloride undergoes a photolytic decomposition, to give  elemental silver, which is grey in colour and chlorine gas.  

following reaction is associated with the given change

                                      2AgCl---------> 2Ag + Cl2 (gas)