Alkanes

Level 2 Organic

How strong are the bonds between molecules in alkane?

Only weak forces exist between molecules. Alkanes have low melting & boiling points.

Are alkanes soluble?

Alkanes are insoluble. they are less dense than water and float on the water’s surface.

What reagent is involved with substitution of alkane into a haloalkane with Bromine?

Br₂ and UV light and/or heat.

What group an alkane turn into after substitution?

Haloalkane

What reagent is involved with substitution of alkane into a haloalkane with Chlorine?

Cl₂ and UV light and/or heat.

What are the physical properties of an alkane reacting with Br₂?

In the presence of light, Bromine can react with an alkane and the orange colour gradually fades. Hydrogen halides formed are acidic, and can be detected with blue litmus.