00:01
Hello, in this question one electron transfer reaction is given that is 2 a p 3 plus aqueous plus 2 i minus aquas and will produce 2 api 2 plus aquas plus i2 solid we need to identify the oxidation half reaction and reduction half reaction.
00:37
For oxidation half reaction, the change in oxidation number among the corresponding species will be positive.
01:15
And the reduction of reaction, the change in oxidation number among the involved species will be negative or lower.
01:59
Here positive or higher.
02:05
Now, as we see in our reaction, 2 -fe -3 plus aquas converted to 2 -fe -2 plus.
02:22
Here the change in oxidation number plus 2 minus plus 3, that is plus 2 minus 3, that is equals to minus 1, that is lower or negative.
02:41
So plus 3 state of iron decreases to plus 2 state of iron.
02:53
So this kind of decrease zinc oxidation state can be states as reduction half reaction.
03:14
Now in our given reaction we see that 2 i minus converted to i2 solid.
03:24
Here i minus present in aqua solution...