00:01
And this question says, predict the products of each of the following biological reactions by interpreting a flow of electrons as indicated by the curved arrow.
00:10
So for the first one, the electrons from the singly bonded oxygen are going to form a double bond because that gives us a more favorable formal charge.
00:20
When that happens, we have to get rid of this bond.
00:22
So we have this bond donating its electrons to this bond to form a double bond.
00:28
And then we need to get rid of this double bond because we have too many bonds to this carbon.
00:31
So it's going to donate its electrons to the positively charged nitrogen, and therefore we have a long pair on resulting nitrogen.
00:39
And carbon dioxide forms as a result of the singly bonded oxygen, forming a double bond.
00:46
So for b, if you look at curved arrows in the book, the singly bonded oxygen becomes doubly bonded.
01:00
And there's a shift in electrons from one side of the carbon to the other, because we need to make sure that the carbons only have four bonds...