CHEM 210 Midterm: Exam 2 Study Guide

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12 Nov 2018
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Study Guide Exam 2
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Understand pi and sigma bonding in alkenes
Understand the difference between E and Z (or cis and trans) alkenes
Understand the energetic barrier for rotation of the double bond in an alkene
Know how to use heats of formation to compare the stabilities of different alkenes
Understand the reactions, regiochemistry and mechanisms for the reactions of alkenes
with the following:
HBr and HCl
H2 and catalyst (Pt/C); you do not need to know this mechanism
H2O and H+
Br2 or Cl2
Hg(OAc)2 followed by NaBH4 (you do not need to know the mechanism for the
step with borohydride
BH3 followed by H2O2
Topics for Exam 2
-
hydrogenation
halogen atom
oxo Mer curation
hydro boronalion
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O3; only know the mechanism for the initial step of addition of O3 to the double
bond
HBr in the presence of a peroxide
Understand the structure and resonance structures for bromonium ions (and related
ions)
Understand the relative stability of carbocations and radicals
Understand rearrangement of carbocations: the migration of H and Me to an adjacent
carbon
Understand deltaG_doubledagger, transitions states, and how rate constants depend
on deltaG_doubledagger, and rate limiting steps
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