Shared Flashcard Set

Details

Exam I
Chapter 2
34
Organic Chemistry
Undergraduate 3
06/02/2013

Additional Organic Chemistry Flashcards

 


 

Cards

Term
Bronsted- lowry acid
Definition
Proton donor, must contain H+
Term
Bronsted-Lowry base
Definition
proton acceptor, must contain lone pair or pi bond
Term
Lewis acid
Definition
electron acceptor
Term
Lewis base
Definition
electron donor
Term
Loss of proton forms ?
Definition
Conjugate base
Term
Gain of proton forms ?
Definition
Conjugate acid
Term
General reaction
Definition
e- rich species attack e- poor species, base donate proton to acid
Term
Electrophile
Definition
Lewis acid
Term
Nucleophile
Definition
Lewis base
Term
starting material with net positive charge
Definition
Usually acid
Term
Starting material with net negative charge
Definition
Usually base
Term
Only one starting material contains H
Definition
Usually acid
Term
Only one starting material contain lone pair on pi bond
Definition
Usually base
Term
Acid strength
Definition
Tendency to donate proton
Term
Tendency to donate high = ?
Definition
Acid strength high
Term
Larger the Ka
Definition
Stronger the acid
Term
pKa = ?
Definition
-log(Ka)
Term
Smaller the pKa
Definition
Stronger the acid, weaker the base
Term
Strong acid forms
Definition
weak conjugate base
Term
Strong base forms
Definition
weak conjugate acid
Term
Position of equilibrium depends on
Definition
relative strengths of acids and bases
Term
Increase in pKa, formation a weaker acid, equilibrium favors ?
Definition
Products
Term
Decrease in pKa, formation of stronger acid, equilibrium favors ?
Definition
Reactants
Term
Acid can be depronated by
Definition
conjugate base of any acid having a higher pKa
Term
Stabilization of conjugate base =
Definition
increased acidity of starting acid
Term
factors that affect acidity of H-A (starting acid)
Definition
1. Elements effects
2. Inductive effects
3. Resonance effects
4. Hybridization effects
Term
To compare acidity of two acids ...
Definition
Compare stability of conjugate bases
Term
Across a row, increase of electronegativity = ___ acidity
Definition
increase in acidity
Term
Down a column, increase in size = ____ in acidity
Definition
Increase in acidity (Larger volume increases stability)
Term
Inductive effect
Definition
pull of e- density through sigma bonds caused by electronegativity differences in atoms
Term
Presence of electron-withdrawin groups =
Definition
increase in acidity
Term
Inductive effect
Definition
acidity of H-A increases with presence of e- drawing groups in A
Term
Resonance effect
Definition
Acidity of H-A increases when conjugate base is stabilized
Term
Hybridization effect
Definition
Acidity of H-A increases as percent s-character of CB increases
Supporting users have an ad free experience!