O-Chem Module 3

Question 1

s orbitals are in groups of…

Answer 1

1

Question 2

p orbitals are in groups of…

Answer 2

3

Question 3

d orbitals are in groups of…

Answer 3

5

Question 4

what are sigma bonds

Answer 4

sp2 overlaps with 1s orbitals

Question 5

what are pi bonds

Answer 5

unused 2p orbitals overlap

Question 6

is the z stereoisomer cis or trans

Answer 6

cis

Question 7

is the E stereoisomer cis or trans

Answer 7

trans

Question 8

R configuration is…

Answer 8

clockwise

Question 9

S configuration is

Answer 9

anti-clockwise

Question 10

what is a nucleophile?

Answer 10

species that can donate a pair of electrons to form a bond

Question 11

what are the features of an SN2 reaction?

Answer 11

• Nu:– binds as leaving group departs
• Strong Nu:– can make up for poor leaving group

Question 12

what are the features of an SN1 reaction?

Answer 12

• Only change occurring in slow step is cleavage of C-X bond
• Good leaving group essential.

Question 13

methyls are usually what type of reaction

Answer 13

SN2

Question 14

primary reactions are normally…

Answer 14

SN2

Question 15

secondary reactions are normally…

Answer 15

SN1 or SN2

Question 16

tertiary reactions are normally…

Answer 16

SN1

Question 17

a strong base would have what type of elimination reaction?

Answer 17

E2

Question 18

a weak base would have what type of elimination reaction?

Answer 18

E1