chapter 2

Question 1

dipole moment (u)

Answer 1

U = S x d
- S = charge
- d = distance between charges

Question 2

units of dipole moments

Answer 2

Debye

Question 3

intermolecular forces from weakest to strongest

Answer 3

1. London dispersion
2. dipole-dipole
3. H-bonding
4. ion-dipole
5. ionic

Question 4

London dispersion forces are roughly proportional to the _____________ ______

Answer 4

surface area

Question 5

do straight-chained alkanes or branched alkanes have stronger attractions

Answer 5

straight-chained

Question 6

Arrhenius acids

Answer 6

dissociate in water and form H3O+ ions

Question 7

Arrhenius bases

Answer 7

dissociate in water to give OH- ions

Question 8

Kw =

Answer 8

[H3O+][OH-] = 1.00 x 10^-14

Question 9

ph =

Answer 9

-log [H+]

Question 10

what does the Arrhenius definition not explain

Answer 10

why NH3 neutralizes acids

Question 11

Bronsted-Lowry acid

Answer 11

donates a proton

Question 12

Bronsted-Lowry base

Answer 12

accepts a proton

Question 13

do stronger acids have smaller or larger pKa values

Answer 13

smaller

Question 14

Lewis base

Answer 14

donates electrons to nucleus with empty or easily vacated orbital

Question 15

Lewis acid

Answer 15

accepts pair of electrons

Question 16

electrophile

Answer 16

Lewis acid - accepts pair of electrons

Question 17

nucleophile

Answer 17

Lewis base - donates pair of electrons