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Unformatted text preview: Glucose (C 6 H 12 O 6 ) Thermodynamically favorable. With such a thermodynamically favorable process, why doesn’t candy explode into CO 2 and H 2 O when exposed to air (see class activity)? KINETICS. Glucose oxidation is slow. The body uses protein catalysts called enzymes to speed up the reactions. Example from Lecture 31 lecture: Diamonds are forever (kinetically speaking) Image courtesy of sirtrentalot on flickr. Consider the thermodynamics of the conversion of diamonds to graphite: For 12.01 g (1 mol) of carbon, C (graphite) is 2,900 J more stable than C (diamond) . This means that graphite formation is thermodynamically favorable and spontaneous! However, there is a HUGE activation barrier for conversion, so diamonds are kinetically inert....
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This note was uploaded on 03/02/2012 for the course CHEM 5111 taught by Professor Vogel during the Fall '08 term at MIT.
- Fall '08