00:02
Hi there.
00:03
Shown here is the molecule of acetic acid.
00:06
And in this molecule, we are interested in the c to c to o bond angle.
00:15
So in other words, we want to know this bond angle right here.
00:19
So question mark degrees.
00:23
Well, to determine this bond angle, we need to know the geometry about this central carbon here.
00:30
So as we look at this central carbon, we see that it has three atoms bonded to it.
00:35
Two oxygens and one carbon, and it has zero lone pairs on it.
00:47
The oxygens are the only things with lone pairs.
00:50
I didn't put those in because they're not important for what we're doing here, but they would look like that.
00:56
Okay, so if there are three atoms bonded to our carbon of interest, and if there are zero lone pairs, that means that the total number of electron groups are going to be three...