00:01
To estimate the bond energy for this gas phase reaction of n, single bond o, it'll be helpful to draw the lewis structures for the reactants and the products.
00:11
The lewis structure for n -o has a double bond between n and o, and there's a lone electron on nitrogen.
00:19
Oxygen with 12 valence electrons has a double bond and everything has an octet.
00:24
And then for n -o -2, there's only 17 valence electrons, so nitrogen will have an odd number of electrons, and the two oxygens will have an octet.
00:35
There are two resonant structures, one where the double bond is on this oxygen, the other where the double bond is here.
00:43
So i assume that they want us to figure out what this bond energy is, knowing delta h for the reaction is negative 57.
00:51
Before we can do that, we need to balance the chemical reaction.
00:56
We've got three oxygens and two oxygens.
00:58
To remedy this, if we put a 2 here, that'll give us 2 nitrogens.
01:04
So we'll need to put a 2 here to get 2 nitrogens...