00:02
Peroxydysulfate added to a solution containing the dissolved steel in chromometric titration.
00:08
So in the steel, it has plenty of manganese.
00:16
So usually if you want to measure the amount of manganese, you're going to use the colorometric acid, which basically is the manganese ion react with 5 ammonia, peroxy dioxide, nh42s2o8.
00:40
And also, combined with 8 more of water, it's going to actually convert the 2 plus ion into permacinate and 04 negative.
00:52
So this has a very unique purple color.
00:56
Then it would also release 10 ammonia ion and also 10 sulfate iron and 8 hydrogen.
01:16
Now you can see that the oxidation state of manganese, 2 plus iron, not becomes plus 7.
01:22
So it loose electron while the sulfur here is plus 7 and now is a plus 6...