100304 1032 recitation

100304 1032 recitation - doesnt change ii. add a catalyst,...

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14.61B rate law for the reaction 2 H 2 (g) + 2 NO(g) N 2 (g) + 2 H 2 O(g) is A. rate = k[H 2 ][NO] 2 . Which of the following mechanisms fits? I. H2 + NO H2O + N slow N + NO N2 + O fast O + H2 H2O fast II. H2 + 2 NO N2O + H2O slow N2O + H2 N2 + H2O fast III. H2 + 2 NO H2O2 + 2 N slow N + NO N2 + O fast O2 + H2 H2O2 fast B . Focus on mechanism I. If the overall reaction is exothermic, the first step endothermic, and steps 2 and 3 exothermic, draw one energy diagram of energy vs reaction progress that is consistent. Label the 3 activation energies on the diagram. Reaction Progress Energy
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C . Predict the effect of the following on step 1 of mechanism 1 i. increase temperature, k 1 increases decreases
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Unformatted text preview: doesnt change ii. add a catalyst, rate of step 1 increases decreases doesnt change iii. increase temperature, Ea of step 1 increases decreases doesnt change iv. If a gase phase catalyst were added to the reaction, this would be an homogeneous catalyst heterogeneous catalyst v. If a solid catalyst were added to the reaction, this would be an homogeneous catalyst heterogeneous catalyst vi. List any reaction intermediates in mechanism I. _____________ vii. The molecularity of the rate determining step is __________ Note we also did an equilibrium approx problem like 14.35, and had a quiz problem similar to that one....
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100304 1032 recitation - doesnt change ii. add a catalyst,...

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