hw7 - CE 561 Homework 7: (assigned 10/14/09, due 10/19/09)...

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CE 561 Homework 7: (assigned 10/14/09, due 10/19/09) (1) For the organic compounds given by the following two structures, give the common name for the compound, name an application for which it is used, and make a group additivity estimate of the heat of formation and standard entropy at 298 K. Note that the group additivity estimates are for gas phase thermochemical properties. Literature data for these compounds may be for the liquid or solid phase. (a) OH O O H O (b) OH (2) The recombination of iodine atoms (2 I I 2 ) in a particular solvent is believed to be diffusion controlled. At 298 K, the rate constant is observed to be 1.3 × 10 10 liter mole -1 s -1 . (a) If the reaction distance ( r AB ) is taken to be 2.2 Å, estimate the diffusion coefficient of I atoms in this solvent at 298 K. (b) The temperature dependence of diffusion coefficients in liquids is roughly given by = µ T D D o where is the (temperature dependent) viscosity of the solvent. The viscosity of the solvent vs. temperature is
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hw7 - CE 561 Homework 7: (assigned 10/14/09, due 10/19/09)...

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