MT1

Question 1

trigonal bipyramidal

Answer 1

90

Question 2

trigonal planar

Answer 2

120, sp2 (with 3 groups (atom/nonbonded pair))

Question 3

trigonal pyramidal

Answer 3

109.5, sp3 (with 4 groups)

Question 4

linear

Answer 4

180, sp (with 2 groups)

Question 5

4kcal/mol

Answer 5

K=1000, B is 99.9 and A is .1 (^ thermo, down kinetic)

Question 6

.6kcal/mol

Answer 6

avg KE of molec at room temp

Question 7

20 kcal/mol

Answer 7

normal room temp barrier

Question 8

K equation with deltaG

Answer 8

deltaG*= -RT(lnK)

Question 9

H2SO4

Answer 9

-5

Question 10

CH3CO2H

Answer 10

4.7

Question 11

CH4

Answer 11

50

Question 12

H3O+

Answer 12

-1.7

Question 13

H2O

Answer 13

15.7 (around where alc is)

Question 14

NH4+

Answer 14

9.3

Question 15

methane

Answer 15

CH4

Question 16

ethane

Answer 16

CH3CH3

Question 17

propane

Answer 17

CH3CH2CH3

Question 18

butane

Answer 18

CH3CH2CH2CH3

Question 19

pentane

Answer 19

CH3(CH2)3CH3

Question 20

hexane

Answer 20

CH3(CH2)4CH3

Question 21

heptane

Answer 21

CH3(CH2)5CH3

Question 22

octane

Answer 22

CH3(CH2)6CH3

Question 23

primary carbon

Answer 23

only attached to 1 carbon (strongest)

Question 24

secondary

Answer 24

only attached to 2 carbons

Question 25

tertiary

Answer 25

only attached to 3 carbons

Question 26

quatanary

Answer 26

only attached to 4 carbons (weakest)

Question 27

isopropyl

Answer 27

one attached C with two methyls coming off it (with a H too)

Question 28

tert-butyl

Answer 28

one attached carbon, with 3 methyls coming off it

Question 29

neopentyl

Answer 29

one CH2 attacked to other, with another carbon coming off it, that has three methyls coming off it

Question 30

deltaH

Answer 30

=DH*=bond dissociation energy (kcal/mol) (really big number is like 119) (deals with # carbons attached)

Question 31

C radical is more stable which means…

Answer 31

weaker and easier to break (the stability thing with sharing electrons with delocalizaton>hyperconjunction)

Question 32

Initiantion

Answer 32

Cl-Cl -> (with heat) Cl* Cl*

Question 33

propagation

Answer 33

"fire," radical chain rxn mech:
CH4* + Cl -> *CH3 + HCl
and
*CH3 + Cl2 -> CH3Cl + Cl*
add two> joining ones without free radicals

Question 34

termination

Answer 34

kills propagation
2Cl* -> Cl2
CH3* + Cl* -> CH3Cl
CH3* + CH3* -> CH3-CH3

Question 35

reactivity/selectivity of halogens

Answer 35

F2 (explodes, unselective)> Cl2 (good, middle selectivity) and Br2 (good, selective)> I2 (won’t go, too selective)

Question 36

axial vs equatorial

Answer 36

like up and down vs sides (and the bulkiest things should be equatorial)
equatorial bonds are parallel to the C-C bonds one over (not the attached ones, but the next one)