click below
click below
Normal Size Small Size show me how
Stack #42468
Orgo Ch1 - Electronic Structure and bonding/ Acids & Bases
Ch1 (front) | Ch1 (back) |
---|---|
Electronegativity | tendency of an atom to pull bonding electrons toward itself |
bond strength or dissociation energy | energy required to break a bond or the energy released when a bond is formed |
pi bond | side to side overlap of 2 "p" atomic orbitals |
Easy way to determine hybridization of C, O, or N | look at number of pi bonds: none - sp3 hybridized/ 1 - sp2 hybridized/ 2 - sp hybridized |
When pKa decreases, what happens to acid strength? | It increases. |
pH scale describes. . . | Used to describe acidity of a SOLUTION |
pKa | is characteristic of a particular COMPOUND |
carboxylic acid | compounds that have a COOH group. i.e. acetic acid, formic acid |
What happens to the stability of a base as the electronegativity increases? | It increases |
Stable bases are _______ bases. | weak |
As we proceed down a column in the periodic table, elements get larger, electronegativity ___________ but the stability of the base __________. | decreases / increases |
stable base | base that readily bears the electrons it formerly shared with a proton. |
degenerate orbitals | orbitals that have the same energy |
aufbau principle | an electron always goes into the available orbital with the lowest energy. |
Pauli exclusion principle | no more than 2 electrons can occupy each atomic orbital and the 2 electrons must be of opposite spin |
Hund's rule | (blank) |
ionization energy | the energy required to remove an electron from an atom |
electronegative | elements that readily acquire an electron |
inductive electron withdrawal | pulling electrons through sigma bonds (in a halogen-substituted carboxylic acid, an electronegative halogen atom pulls the bonding electrons toward itself) |
H - H equation | tells us whether a compound will exist in its acidic form(proton retained) or in its basic form(proton removed) at a particular pH. |
pH < pKa | compound will exist primarily in it's ACIDIC form |
pH > pKa | compound will exist primarily in it's BASIC form |
Lewis acid | species that accepts a share in an electron pair |
Lewis base | species that donates a share in an electron pair |