Alkenes

Question 1

Define Stereoisomers

Answer 1

Stereoisomers are compounds with the same structural formula, but a different arrangement of atoms in space

Question 2

Why does E/Z isomerism arise in alkenes?

Answer 2

Restricted rotation about the C-C double bond

AND

2 different groups attached to each carbon of the C-C double bond

Question 3

Name the reagents and conditions to convert an alkene into an alkane

Answer 3

H2 and Ni catalyst

Question 4

Name the reagents and conditions to convert an Alkene into a dihaloalkane?

Answer 4

Any halogen

Question 5

Name the chemical test for the present of an Alkene?

Answer 5

Alkenes decolourise Bromine water

Question 6

Name the reagents and conditions to convert an Alkene into a monohaloalkane?

Answer 6

Any hydrogen halide

Question 7

Na,e the reagents and conditions to convert an alkene into an alcohol

Answer 7

Steam and an acid catalyst

Question 8

Name the mechanism by which haloalkanes are made from alkenes

Answer 8

Electrophilic Addition

Question 9

What 2 types of bond make up a double bond?

Answer 9

1 sigma and 1 pi bond

Question 10

Why would the major product be formed in electrophilic addition reaction of an unsymmetrical alkene with HX?

Answer 10

The major product forms from the most stable carbocation intermediate

Question 11

Order carbocations from most to leasts stable

Answer 11

3o>2o>1o