00:01
So now we'll work on problem 88 from chapter 20.
00:10
In this problem, we're told that copper corrodes to cupris oxide, co2o, or cupric oxide, cuo, depending on environmental conditions.
00:24
First question, part a, what is the oxidation state of copper and cupris oxide? cu2o.
00:35
So here, as we know, o will have, a negative 2 charge, which means since we have two coppers, we'll need them to each have only a positive 1 charge to balance out this charge here.
00:52
So that's the answer for part a.
00:56
In part b, we're asked about the second compound, cupric oxide, which is coo.
01:08
And again, oxygen will have a negative 2 oxidation state, which means that copper will this time have a positive two oxidation state.
01:23
In part c, we're told that copper peroxide is another oxidation product of elemental copper...