Standard absolute entropies owl4/22/2024 And some professors like to use kilocalories per mole. Okay now whenever you're measuring anything with energy you have to be aware that some texts and some professors like to use kila jewels per mole. Ok so essentially in those parentheses, what I have is it's literally just the energy difference between the actual and equatorial positions in killed joules per mole. Okay so you can Wikipedia later And but basically what is an A value? All it is is it's the sum of all of the energy expenses of the 13 di actual interactions that are created by going into the actual position. And obviously like if you look online you would see if this is called a values. But it is found in more complicated texts. Okay now this term A values is a term that you're not going to find in your textbook. But how much energy does it actually take for the molecule to flip into that less stable position? Well, thankfully scientists have done that those scientific experiments for us and they developed something that we call a values. Remember that I told you guys that equatorial preference states they are always trying to be in that more stable position. Okay, sometimes we're going to be required to actually calculate these numbers in killing joules per mole and calculate the expense that it takes for a molecule to flip from equatorial to axial. Okay, so the first thing that we're going to do is learn how to calculate flip energy. Okay, so if you need to positive video to grab this by all means go for it. Okay, I'm just teaching it just in case Now, as a side note, I'm going to need you to since it is mathematical, drop your iphone calculator, whatever and grab one of these because we're actually going to be doing equations with E and logarithms and stuff like that. Okay, so you're gonna be responsible to talk to your professor or you know, look at old exams or whatever and determine if this is something that you need to know or not. But this also happens to be an area of organic chemistry that many professors don't teach because they just find it too mathematical and too tedious. Now, the reason that I'm even recording these to begin with is because your textbook goes through all this detail and I'm just trying to be as comprehensive as possible. Alright guys, so in the next few videos I'm going to be going over a much more rigorous description of conformational analysis.
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