Shared Flashcard Set

Details

CHEM 371
Understanding Organic reactions
18
Chemistry
Undergraduate 3
02/21/2007

Additional Chemistry Flashcards

 


 

Cards

Term
reagent
Definition
the chemical substance with which an organic compound reacts
Term
substitution bonds
Definition
one sigma bond breaks
one sigma bond forms at teh same carbon atom
Term
elimination bonds
Definition
two sigma bonds broken
one pi bond formed betwn adjacent atoms
Term
addition bonds
Definition
one pi bond broken
2 sigma bonds formed
Term
concerted reaction
Definition
one-step reaction
Term
reactive intermediate
Definition
the unstable intermediate product
Term
homolysis/homolytic cleavage
Definition
electrons are divided equally (makes uncharged reactive intermediates)
Term
heterolysis/heterolytic cleavage
Definition
electrons both go to one atom (the more electronegative) (Makes charged intermediates)
Term
radicle
Definition
reactive intermediate with a single unpaired electron
Term
enthalpy
Definition
change or heat of reaction (delta H)

delta H = sum of delta H bonds broken - sum of delta H bonds formed
Term
enthalpy +/-
Definition
+ endothermic
- exothermic
Term
thermodynamics
Definition
related to energy and equilibrium
Term
kinetics
Definition
related to reaction rate
Term
K eq.
Definition
K eq. = products/starting materials

greater 1 = products favored
less than 1 = starting materials favored
Term
Free engergy (delta G)
Definition
=G products - G reactants

=-2.303 RTlog Keq.
R= 1.987
T= kelvin temp
Term
K/G relationship
Definition
K greater than 1 = delta G negative
K less than 1 = delta G positive
Term
favored delta S (entropy change)
Definition
increase in delta S are favored
Term
favored delta H
Definition
negative delta H = products favored
positive delta H = startingn material favored
Supporting users have an ad free experience!