MECHANISM: Addition reactions of alkenes

Question 1

Give reagents and mechanisms for electrophilic addition of alkenes.

Answer 1

reagents:
to make a haloalkane: Br2, HBr + Hcl at room temp

to make an alcohol: H2SO4

able to form major and minor products. major products are more stable as more carbon cations surround the delta positive carbon.

Question 2

How to test for alkenes?

Answer 2

Use bromine water.
alkene present = orange to colourless