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#1327929 07/06/05 07:46 PM
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Macgyver is teh man, how dare you question him!


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#1327930 07/06/05 08:42 PM
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The mscgyver directors actually had a few colleges around the country coming up with most of his easy fix situations. So, im assuming most of them, although maybe a little exaggerated, will actually work

#1327931 07/06/05 09:28 PM
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Originally posted by ancientsanskrit:
Originally posted by PackRat:

NERD!



Yep!





Ah, Harold Green, eh?


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#1327932 07/06/05 09:35 PM
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Originally posted by rmcd79:
Originally posted by ancientsanskrit:
Originally posted by PackRat:

NERD!



Yep!





Ah, Harold Green, eh?




If the women don't find you handsome, they should at least find you handy.



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#1327933 07/06/05 09:57 PM
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Originally posted by TourDeForce:
Thou shalt not use HIS name in vein!




Thou shalt not misuse "vain"!!


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#1327934 07/06/05 10:05 PM
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Originally posted by ancientsanskrit:
Sucrose structure:


I'm not very familar w/ the structure of Dextrose, but I think it's just the D-glucose (I'm pretty sure it's D-glucose, since normal glucose is L-glucose).




You are correct, sir!



Originally posted by ancientsanskrit:
In any case, it's a carbohydrate as well and would occur with the same dehydration synthesis @ the glycosidic center.




However, there's no glycosidic center as there is with sucrose. I don't remember enough from OrgChem to remember which piece the H- would kick off... most likely kick the carboxyl group... though I don't know how that'd help the situation of a chemical leak...

--JamesT


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#1327935 07/06/05 10:17 PM
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I suspect the writers of the show didn't remember their chemistry correctly.

If you add concentrated (> 92% active in water) sulfuric acid to sugars such as glucose, sucrose, and dextrose, the sugar dehydrates significantly and swells into a blackened chunk of carbon (see link)

http://jchemed.chem.wisc.edu/JCESoft/CCA/CCA5/MAIN/1ORGANIC/ORG18/TRAM18/A/PICTURE.HTM?1

Hydrochloric acid cannot do this because you cannot increase the concentration significantly above 37% active in water. The sugar cannot dehydrate effectively in the presence of a lot of water.

Mr. Spindlelegs

#1327936 07/06/05 10:19 PM
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MacGyver is my Hero


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#1327937 07/06/05 10:44 PM
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MacMuthafarkinGuyver is the MAN!


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#1327938 07/06/05 11:04 PM
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Originally posted by chemguru:


However, there's no glycosidic center as there is with sucrose. I don't remember enough from OrgChem to remember which piece the H- would kick off... most likely kick the carboxyl group... though I don't know how that'd help the situation of a chemical leak...

--JamesT




Heh, I realized that shortly after! Good catch! Yeah, the carboxyl H should be deprotonated first, but as you stated, it really doesn't amount to anything significant.


Originally posted by mrspindlelegs:


If you add concentrated (> 92% active in water) sulfuric acid to sugars such as glucose, sucrose, and dextrose, the sugar dehydrates significantly and swells into a blackened chunk of carbon (see link)

Hydrochloric acid cannot do this because you cannot increase the concentration significantly above 37% active in water. The sugar cannot dehydrate effectively in the presence of a lot of water.

Mr. Spindlelegs




Excellent point Mr. Spindlelegs. Hydrocholoric acid wouldn't be hydrated in that reaction. As I expected it would form Carbon/graphite, but I didn't realize HCl wouldn't do so, rather it is H2S04/Sulfuric acid. Good stuff!


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