[Script Info]
Title: 
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:00.00,0:00:03.67,Default,,0000,0000,0000,,I want to make a quick correction
Dialogue: 0,0:00:03.68,0:00:05.86,Default,,0000,0000,0000,,to my second oxidation video.
Dialogue: 0,0:00:05.86,0:00:07.80,Default,,0000,0000,0000,,It was pointed out that I made an error
Dialogue: 0,0:00:07.81,0:00:09.61,Default,,0000,0000,0000,,that you will probably find confusing.
Dialogue: 0,0:00:09.62,0:00:12.25,Default,,0000,0000,0000,,So I had written down hydrogen peroxide.
Dialogue: 0,0:00:12.25,0:00:16.03,Default,,0000,0000,0000,,Because this was one of the situations or the special cases
Dialogue: 0,0:00:16.05,0:00:19.59,Default,,0000,0000,0000,,where oxygen's oxidation state
Dialogue: 0,0:00:19.60,0:00:21.20,Default,,0000,0000,0000,,isn't necessarily minus 2.
Dialogue: 0,0:00:21.21,0:00:25.20,Default,,0000,0000,0000,,So hydrogen peroxide is 2 hydrogens, 2 oxygens.
Dialogue: 0,0:00:25.23,0:00:27.96,Default,,0000,0000,0000,,And it's structure looks like this.
Dialogue: 0,0:00:27.97,0:00:30.00,Default,,0000,0000,0000,,The oxygens are bonded to each other,
Dialogue: 0,0:00:30.00,0:00:33.08,Default,,0000,0000,0000,,and they're each bonded to a hydrogen.
Dialogue: 0,0:00:33.09,0:00:36.42,Default,,0000,0000,0000,,And we know oxygen is really electronegative.
Dialogue: 0,0:00:36.43,0:00:37.95,Default,,0000,0000,0000,,It likes to hog electrons.
Dialogue: 0,0:00:37.96,0:00:39.02,Default,,0000,0000,0000,,And I said that in that video.
Dialogue: 0,0:00:39.04,0:00:40.26,Default,,0000,0000,0000,,And because it hogs electrons,
Dialogue: 0,0:00:40.27,0:00:44.20,Default,,0000,0000,0000,,the hydrogens lose their electron to oxygen,
Dialogue: 0,0:00:44.20,0:00:46.34,Default,,0000,0000,0000,,or at least from the oxidation state point of view.
Dialogue: 0,0:00:46.34,0:00:50.33,Default,,0000,0000,0000,,So they each have a plus 1 oxidation state,
Dialogue: 0,0:00:50.34,0:00:51.91,Default,,0000,0000,0000,,which I did say in that video.
Dialogue: 0,0:00:51.91,0:00:54.17,Default,,0000,0000,0000,,And then I went on and my brain was clearly
Dialogue: 0,0:00:54.18,0:00:57.36,Default,,0000,0000,0000,,-- and this is actually a good point for you to realize
Dialogue: 0,0:00:57.37,0:00:58.83,Default,,0000,0000,0000,,how confusing this can sometimes be
Dialogue: 0,0:00:58.84,0:01:00.34,Default,,0000,0000,0000,,if you're not careful with your work.
Dialogue: 0,0:01:00.35,0:01:02.10,Default,,0000,0000,0000,,I say in the last video,
Dialogue: 0,0:01:02.11,0:01:04.75,Default,,0000,0000,0000,,and obviously oxygen gains an electron.
Dialogue: 0,0:01:04.77,0:01:07.77,Default,,0000,0000,0000,,And then I say and it's oxidation state is plus 1.
Dialogue: 0,0:01:07.78,0:01:10.24,Default,,0000,0000,0000,,Which clearly makes no sense.
Dialogue: 0,0:01:10.25,0:01:12.16,Default,,0000,0000,0000,,If you gain an electron,
Dialogue: 0,0:01:12.18,0:01:15.00,Default,,0000,0000,0000,,that will reduce your oxidation state.
Dialogue: 0,0:01:15.00,0:01:16.80,Default,,0000,0000,0000,,It will reduce that hypothetical charge.
Dialogue: 0,0:01:16.81,0:01:19.98,Default,,0000,0000,0000,,And so your oxidation state is minus 1
Dialogue: 0,0:01:19.99,0:01:21.91,Default,,0000,0000,0000,,in each of these oxygens.
Dialogue: 0,0:01:21.93,0:01:24.18,Default,,0000,0000,0000,,And, of course, this is a special case
Dialogue: 0,0:01:24.19,0:01:26.88,Default,,0000,0000,0000,,because traditionally, oxygen in the case
Dialogue: 0,0:01:26.89,0:01:29.03,Default,,0000,0000,0000,,I always show it with, is in water.
Dialogue: 0,0:01:29.04,0:01:31.62,Default,,0000,0000,0000,,When it takes 2 electrons,
Dialogue: 0,0:01:31.64,0:01:33.88,Default,,0000,0000,0000,,1 from this hydrogen and 1 from that hydrogen,
Dialogue: 0,0:01:33.89,0:01:36.12,Default,,0000,0000,0000,,it normally has an oxidation state of minus 2
Dialogue: 0,0:01:36.14,0:01:37.60,Default,,0000,0000,0000,,and, of course, in this case,
Dialogue: 0,0:01:37.61,0:01:39.64,Default,,0000,0000,0000,,it's plus 1 and plus 1 for the 2 hydrogens.
Dialogue: 0,0:01:39.64,0:01:43.77,Default,,0000,0000,0000,,I think later, when I go back to the molecular formula,
Dialogue: 0,0:01:43.79,0:01:45.23,Default,,0000,0000,0000,,I kind of corrected in my head.
Dialogue: 0,0:01:45.24,0:01:46.64,Default,,0000,0000,0000,,But I want to be very clear to you.
Dialogue: 0,0:01:46.64,0:01:50.21,Default,,0000,0000,0000,,Oxygen does not have an oxidation state of plus 1
Dialogue: 0,0:01:50.23,0:01:51.28,Default,,0000,0000,0000,,in hydrogen peroxide.
Dialogue: 0,0:01:51.29,0:01:52.38,Default,,0000,0000,0000,,It is minus 1.
Dialogue: 0,0:01:52.39,0:01:54.09,Default,,0000,0000,0000,,I said it gained the electrons,
Dialogue: 0,0:01:54.10,0:01:56.55,Default,,0000,0000,0000,,but then my brain obviously heard the word gaining
Dialogue: 0,0:01:56.57,0:01:58.19,Default,,0000,0000,0000,,and wanted to put a plus sign there.
Dialogue: 0,0:01:58.20,0:02:01.58,Default,,0000,0000,0000,,No. It gained an electron that reduces the oxygen.
Dialogue: 0,0:02:01.60,0:02:06.34,Default,,0000,0000,0000,,It makes its oxidation state minus 1 for hydrogen peroxide.
Dialogue: 0,0:02:06.36,0:02:07.89,Default,,0000,0000,0000,,So hydrogen peroxide has
Dialogue: 0,0:02:07.91,0:02:12.44,Default,,0000,0000,0000,,2 hydrogens with a plus 1 oxidation state.
Dialogue: 0,0:02:12.45,0:02:16.00,Default,,0000,0000,0000,,And it has 2 oxygens with a minus 1 oxidation state.
Dialogue: 0,0:02:16.02,0:02:19.70,Default,,0000,0000,0000,,One times 2 minus 1 times 2 is equal to 0,
Dialogue: 0,0:02:19.71,0:02:21.91,Default,,0000,0000,0000,,so we're all cool.