Chapter 3 lecture Flashcards
Heteroatoms
Not C or H
Which is the hydrogen bond acceptor and donor and why? (look at word)
notes page 75
How can dipole dipole occur?
polar molecules where one end is partially positive and the other end is negative
What is the dipole dipole interaction of acetone? (look at word)
note page 75
Dipole dipole interaction of CH3-C(triple bond) N
note page 75
Van der waal forces
Weak interactions caused by momentary changes in electron density and results in temp dipole
What compounds are attractive forces present?
nonpolar
What happens for attractive forces between 2 molecules based on surface area
Larger surface area= larger attractive force
Which molecule has larger attractive force (on word)
note page 75
What does it mean if a compound has a higher temperature boiling point
attractive forces are stronger
longer chains cause what
Stronger attraction of molecules together
Polizability
measure of how electron cloud around atoms respond to changes
What type of atom has stronger VDW forces based on polarizability
larger atoms= loosely held= more polarizabile
smaller atoms= tightly held = less polarizablie
Which atom has more polarizability? I or F
I is more polarizable
As intermolecular forces increases what also increases
Boiling point
Rank increasing boiling points and why? CH3Cl,CH3Br, CH3I, CH3F
CH3F,CH3Cl,CH3Br,CH3I
rank highest boiling point and why
1. CH3CH2CH2CH2CH3
2. CH3CH2CH2CH2OH
3. CH3CH2CH2CHO
1 VDW
3 DD VDW
2 HB DD VDW
On word doc which has a higher boiling point and why
1 because it has more surface area
On word doc rank higher boiling point and why
1, 2, 3
What is the increasing strength of intermolecular forces
VDW, DD, HB
rank which has highest Melting point and why
note page 77
If they all have same F group what will have higher melting point
more symmetrical compound
What are the normal solubility trends
like dissolves like
organic compound only water-soluble if
1 polar functional group that can do hydrogen bonding with solvent for every 5 C atoms
Why do polar solvents dissolve in polar solvents
hydrogen bonding
What causes functional groups?
Heteroatoms and Pi bonds
What are the parts of an organic molecule?
Hydrocarbon backbone (R), covalent bond, functional group
What do functional groups do
determine properties
Aliphatic Hydrocarbons
Only made of C and H and have poor reactivity
Alkane
R-H
Example of Alkane
Note page 55
Alkene
R(double bond)FG
example of Alkene
Note page 55
Alkynes
R(triple Bond)FG
Example of Alkynes
Note page 55
Phenyl
Note Page 55
Aromatic Hydrocarbons
only C and H in a circle with poor reactivity
What is the most common Aromatic Hydrocarbon
Beneze
Alkyl Halide
R–X (X= F,Cl,Br,I)
Example of Alkyl Halide
CH3-I
Functional group name of Alkyl Halide
halo
Alcohol
R-OH
Example of Alcohol
CH3CH2–OH
Functional group name of alcohol
hydroxyl
How do you know what is the back bone?
larger chain of carbon
Ether
R–O–R
when is an ether symmetrical and unsymetrical?
Symmetrical when both R are =
Unsymmetrical when both R are not =
Example of ether
CH3OCH3
CH3OCH2CH3
Functional group name of ether
Alkoxyl
Amine and names of types
R-NH2 Primary
R-NH-R Secondary
R-NH-R Tertiary
|
R
Functional Group name Amine
Amino
Thiol
R-SH
example of Thiol
CH3SH
Functional Group name Thiol
Thio mercapto
Sulfide (thioether)
R-S-R
Example Sulfide (thioether)
CH3-SCH3
Functional Group name sulfide (thioether)
Alkylthio
Carbonyl Group
C=O
Ketone
Note Page 71
Example of Ketone
Note page 71
Functional group name for Ketone
Carbonyl
Aldehyde
Note page 71
Example of Aldehyde
Note page 71
Functional group name for Aldehyde
Carbonyl
Carboxylic acid
Note page 71
Example of Carboxylic acid
Note page 71
Functional group name of carboxylic acid
carboxyl
Ester
Note page 71
Example of ester
note page 71
Functional group name of ester
ester
Amide and types
Note page 71
example of amide
note page 71
Acid halide
note page 72
example of acid halide
note page 72
Types of bonds and strengths
Hydrogen bonds strongest, dipole-dipole moderate, van der Waals forces weak
Hydrogen bonding
HO, HN, HF attracted to to lone pair on O,N,F
Are Hydrocarbons soluble in CCl4 and H2O?
CCl4 yes
H2O no
Are ketones soluble in CCl4 and H2O?
CCl4 yes
H2O yes
Why is Aceton solube in CCl4 and H2O
Hydrophobic hydrocarbons= Soluble with CCl4
Hydrophilic O= soluble with H2O
Hydrophobic
Hydrophilic
Which molecules are more soluble in water
Vitamin A
Vitamin C