|Jerry Don Bauer
Joined: Nov. 2012
[quote=raguel,Nov. 28 2012,18:41][/quote]
|Apologies in advance but I don't know how to do post/subscripts:|
The bolded part can be assumed to be true if and only if the products are either identical or mirror images of one another. (One can't assume that the Ea or dH are equal unless the products are identical or mirror images. Rule of thumb I learned from chem courses is that if there are different compounds then more than likely they are at different energy levels. The only exception one can count on are enantiomers. Everything else has to be experimentally determined.)Why? Because if the activation energies are different enough you'll only see one product. If they are the same but the products have different energy levels and they are in equilibrium, then the products will form at the same rate but over time the product at the lower energy level will be formed in greater amounts.
So the larger the polypeptide chain, the worse your assumption (that all products have equal chance of formation) is.
They ARE mirror images.......that's what the the left handed and right handed refers to when we are discussing Enantiomers (Enantiomers are what I'm talking about). You don't need to take a chemistry class to know this, just look up the term:
"either of a pair of optical isomers that are mirroe images of each other..."
The rest is simply irrelevant. If you think it is relevant then hone in on your argument with some references and I'll look at it.
and remember that a racemic solution is ALWAYS in equilibrium.
|..... as I explained above, and as I implied before (and I'm guessing Ogre supplied links to) in the presence of a catalyst you can get homochirality. This is stuff I learned in the 90s (although not directly related to evolution; just organic chemistry).|
You have refered twice now to the addition of a catalyst. A catalyst is simply an additional chemical added that increases the rate of a chemical reaction. What catalyst are you talking about and what is it you think it does to enantiomers when added to a racemic mixture? (also some references, please)
Also, if someone added this catalyst to the racemic mixture, isn't this intelligent design?