10.2 organic chemistry -- functional grp reactions

Question 1

C-C and C-H bonds are strong/weak

Answer 1

strong

Question 2

are alkanes polar?

Answer 2

no

C and H are very close in electrongeativity

Question 3

reacions of alkanes 2

Answer 3

combustion

substitution by halogens

Question 4

why can alkenes undergo addition reactions

Answer 4

they contain pi bonds (weaker) – can be broken to form stronger sigma bonds without any atoms breaking off

Question 5

are alkanes or alkenes more reactive

Answer 5

alkenes
have weaker pi bonds

Question 6

what kind of alcohol does not undergo oxidation and why

Answer 6

tertiary – there must be a H on the functional grp carbon to break off to form water

there are only C-C bonds on the functional grp carbon in a tertiary alcohol

Question 7

why do alkylarenes (theres an alkyl grp on the benzene) undergo halogenation on the 2/4 position

Answer 7

electron-donating alkyl grps activate these positions = forms 2 products