RxMechanisms2 - 3 ) and chlorine gas proceeds in a series...

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Reaction Mechanisms – 2 1) A reaction has the following mechanism. What is the net overall change that occurs in this reaction? What is the molecularity of each step? 2 NO N 2 O 2 N 2 O 2 + H 2 N 2 O + H 2 O N 2 O + H 2 N 2 + H 2 O 2) Oxidation of NO to NO 2 - one of the reactions in the production of smog - appears to involve carbon monoxide. Write the overall change that occurs in this reaction. What is the molecularity of each step? CO + •OH CO 2 + H• H• + O 2 HOO• HOO• + NO •OH + NO 2 3) A reaction has the following mechanism. What is the net overall change that occurs in this reaction? What is the molecularity of each step? OCl - + H 2 O HOCl + OH - HOCl + I - HOI + Cl - HOI + OH - H 2 O + OI - 4) The reaction between chloroform (CHCl
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Unformatted text preview: 3 ) and chlorine gas proceeds in a series of three elementary steps. Step 1: Cl 2 (g) 2 Cl(g) fast Step 2: CHCl 3 (g) + Cl(g) CCl 3 (g) + HCl(g) slow Step 3: CCl 3 (g) + Cl(g) CCl 4 (g) fast a) Which step is rate determining? b) Write the expression for the overall reaction rate. c) What is the molecularity of each step? 5) The mechanism for the decomposition of ozone in the upper atmosphere is thought to be: Step 1: O 3 (g) O 2 (g) + O (g) fast Step 2: O 3 (g) + O (g) 2 O 2 (g) slow a) Which step is rate determining? b) Write the expression for the overall reaction rate. c) What is the molecularity of each step?...
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This note was uploaded on 01/09/2011 for the course SCIENCE 12084 taught by Professor Mrdavidbyrum during the Spring '10 term at Harrison College.

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