3.4 quiz key

3.4 quiz key - BONDS FORMED(secondary)C-H bond 401 kJ/mol...

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Weekly Quiz March 3, 2006 1. Show the radical chlorination for cyclohexane. Heat Cl Cl 2 HCl + + H Cl Cl 2 Cl Cl HCl Cl Cl Cl + Cl + INITIATION PROPAGATION TERMINATION 2. Why is a description of a reaction in enthalpic terms only approximate? See book page 155 for a good answer to this question. 3. Are the following reactions substitution/elimination/rearrangement/addition.
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REARRANGEMENT Br NaOCH 3 + NaBr CH 3 OH + ELIMINATION REARRANGEMENT Cl Cl 2 AlCl 3 SUBSTITUTION xs HBr Br Br ADDITION Br NaOCH 3 + NaBr CH 3 OH + ELIMINATION 4. Is the reaction shown in question 1 endothermic or exothermic? Show proof. BONDS BROKEN :
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Unformatted text preview: BONDS FORMED: (secondary)C-H bond + 401 kJ/mol H-Cl- 432 kJ/mol Cl-Cl + 243 kJ/mol (secondary)C-Cl- 339 kJ/mol + 644 kJ/mol (energy in) and -771 kJ/mol (energy out). Therefore, a total of 127 kJ/mol released in this reaction. It is exothermic. 5. Draw a reaction coordinate diagram for the following reaction for which the mechanism is shown. Label the reactants, products, and all intermediates and transition states. H + H H 2 O H O H H H 2 O H OH reactant int int T.S. 1 T.S. 2 T.S. 3 product...
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3.4 quiz key - BONDS FORMED(secondary)C-H bond 401 kJ/mol...

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