00:01
Hello students, hope you are doing great.
00:03
In this question we are given a redox reaction and we have to balance this redox reaction in acidic condition.
00:09
Let us first write the oxidation state of all the reagents.
00:14
Here tellurium is present in plus 4 oxidation state and here it is present in plus 2 oxidation state.
00:21
Since its oxidation state is decreasing from plus 4 to plus 2, tellurium is undergoing reduction over here.
00:28
Here the bromine is present in 0 oxidation state and here it is present in plus 3 oxidation state.
00:35
So its oxidation state is increasing from 0 to plus 3 which means bromine is undergoing oxidation over here.
00:42
Let us balance this reaction.
00:44
To balance this reaction first of all we will have to write this half reactions separately.
00:50
So here we have teo2 which gives te2 plus iron.
00:56
Here tellurium is balanced but oxygen is not balanced.
00:58
To balance oxygen we will add 2h2o.
01:02
Now hydrogen is not balanced.
01:04
To balance hydrogen we will add 4h plus ions.
01:08
Now this reaction is balanced.
01:10
The other half reaction is br2 gives bro-...