00:01
The font didn't come through very well here, but i believe the chemical equation is 2 mno4 minus reacting with 3 c2o4 2 minus and 2 h2o will produce 2 mno2 no charge plus 4 h plus and 6 mno2.
00:35
Co3 is co3 2 - for carbonate.
00:46
So we've got a total of 12 - plus 4.
00:50
That's 8-.
00:53
And we've got 6 - and 2-.
00:56
So that's 8-.
00:57
So i think that's correct.
00:59
If we begin assigning oxidation numbers, oxygen is typically minus 2.
01:05
There are 4 of them.
01:06
That's minus 8.
01:08
So that means manganese needs to be plus 7.
01:10
So when added to the minus 8 we get minus 1.
01:15
Oxygen again is minus 2.
01:16
There are four of them so that's minus 8.
01:19
So each carbon needs to be plus 3 so that we get plus 6.
01:23
When added to the minus 8 gives us minus 2.
01:28
Oxygen is minus 2...