ORGO EXAM 2 AHHHHHH HELP Flashcards
Same connectivity, different arrangement of groups
stereoisomers
Non-super imposable mirror images; mostly same properties
Enantiomers
Stereoisomers that are not enantiomers; atleast one conformation stays the same
Diastereomers
Max number of stereoisomers when given chiral centers?
2^n (n = chiral centers)
Degrees of unsaturation formula
2C+2-H-X+N
____________
2
achiral compound with mirror image of chiral carbon inside
Meso compound
A measure of the amount of disorder in a system
entropy
delta S is
Entropy
Delta H is
Enthalpy (heat)
As temperature increases, Entropy increases/decreases
Increases
As temperature decreases, Entropy increases/decreases
Decreases
If Enthalpy (H) is exothermic (-) and Entropy (S) is positive (+), the reaction will be
Always spontaneous
If Enthalpy (H) is endothermic (+) and Entropy is negative, the reaction will be
Always nonspontaneous
If Enthalpy (H) is endothermic (+) and Entropy (S) is (+), the reaction will be
Spontaneous at high temperatures and nonspontaneous at low temperatures
If Enthalpy (H) is exothermic (-) and Entropy (S) is negative (-), the reaction will be
Spontaneous at low temperatures and nonspontaneous at high temperatures
Rotation of plane-POLARIZED light
Optical Activity
Separation of enantiomers by temporarily converting to diastereomers
Resolution
Can be converted to chiral in one step
Prochiral
A platform for distinguishing enantiomers, prochiral groups, and s-center recognition
receptor
Elimination reaction
Forming a double bond
Bond dissociation energy is
Defined as?
Enthalpy
one measure of the strength of a chemical bond A−B
ΔG formula
ΔG=ΔH-TΔS
Exergonic ΔG:
Endergonic ΔG:
- -
- +
Exergonic Keq:
Endergonic Keq:
- Larger than 1
- Less than 1
X axis of energy diagram is ________________
Y axis of energy diagram is
RXN
Energy
Wants to donate an electron pair (-)
Nucleophile
Wants to accept an electron pair (+)
Electrophile
Trans or cis more stable? Why?
Trans; less steric strain
