Aqueous solutions of ammonia 1NH32 and bleach (active ingredient NaOCl) are sold as cleaning fluids, but bottles of both of them warn: 'Never mix ammonia and bleach, as toxic gases may be produced.' One of the toxic gases that can be produced is chloroamine, NH2Cl. (e) Is N oxidized, reduced, or neither, upon the conversion of ammonia to nitrogen trichloride?

Video transcript

Hey everyone today, we're being asked to identify if iron is being oxidized, reduced or acting as a spectator ion and the reaction between iron three oxide and zinc oxide to form zinc ferret. Now, let's write this out here because it's important to know the before and after oxidation states in order to determine if a molecule or element is being oxidized, produced or acting as a spectator ion. So we have F E and zinc oxide. Now, using our oxidation rules, we can go ahead and realize that oxygen, each oxygen in both of these compounds will have a oxidation state of negative to this is because it isn't in hydrogen peroxide and it isn't bonded to a flooring, which means in general it will have a oxidation state of negative two. So in iron three oxide, there are three oxygen's, which means negative two times three gives us negative six. So all the oxygen is combined, give us a total Oxidation State of -6. However, Iron three oxide is a neutral molecule, which means that the sum of the all the oxidation states must equal zero. So in order for this to be plus six as well, since we have two irons, that means iron alone Must have an oxidation state of -3. Pretty simple. Using similar logic for zinc oxide, oxygen has a negative two oxidation state. And since it's a neutral compound, this should have a plus two oxidation state as well. Taking a look at our products now, which is zinc ferret zinc F. E 022, zinc will actually keep its plus two oxidation state. And that's because that is the A the most common oxidation state for zinc to zinc to have have an oxidation state of two plus here and also, since we have oxygen present here and it's not a hydrogen peroxide, it's a ferret. That means this oat or this entire term must have some charge to it, Regardless which means Zinc two plus also acts as a spectator ion here. So, with this in mind, let's break this down a little bit further. We have f. e. 02 as the second part or what zinc is bonded to. So we have F. E. 02. Now, since this is a neutral molecule, if zinc two plus has a or zinc has an oxidation state of two plus, then that means that F E. O. Too must have a oxidation a total oxidation state of negative two. So with that logic, a single FEO two must have an oxidation state of - total because we have two of them making an oxidation state of - or -2. And since oxygen again has an oxidation state of negative two. Normally having two of them here would give us a oxygen 10 negative four, which means iron must then have a Oxidation state of plus three because plus three minus four gives us negative one. Oops I wrote this wrong, this is plus three. So as we can see, iron goes from a charge of plus three or an oxidation state of plus three to an oxidation state of plus three, which means it's neither being oxidized or reduced. So it is neither In the reaction between Iron three oxide and zinc oxide. Iron is neither reduced nor oxidized. I hope this helps. And I look forward to seeing you all in the next one.