00:01
Have a look at a few redox reactions.
00:03
So, redox reaction is a one in which both oxidation and reduction are occurring.
00:08
So we are having this dichromate ion and it is reacting with iron 2 plus iron and it is undergoing reaction to form chromium 3 plus and iron 3 plus.
00:18
So in this dichromate iron, we should know the oxidation state of chromium.
00:23
It is plus 6 here and plus 2 is the oxidation state of iron.
00:27
Similarly, plus 3 is oxidation state of chromium.
00:30
And plus 3 is iron.
00:32
So now from the plus 3 state, it is undergoing to plus 3.
00:36
Firstly, there are two chromium on the reactant side.
00:39
So we must try to in front of the chromium in the product side.
00:44
Now there is a change of 3 occurring.
00:48
So we should multiply on the other side by the 3...