Elimination

Question 1

How are alkenes formed from alcohols?

Answer 1

By acid-catalysed elimination reactions (dehydration)

Question 2

What can alkenes formed through this method be used for?

Answer 2

To produce addition polymers without using monomers derived from crude oil.

Question 3

The oposite of hydration

What is another name for the formation of alkenes from alcohols?

Answer 3

The dehydration of alcohols

Question 4

What are the conditions for this elimination reaction?

Answer 4

Concentrated sulfuric acid or phosphoric acids - acting as a dehydrating agent/catalyst
Warm - under reflux

Question 5

Outline the mechanism for this elimination reaction

Answer 5

1. Electron pair -> H+
2. Bond (R-O) -> O (H2O should have been produced by now)
3. H-C bond opposite CH2 with lone electron -> the bond between the R groups
   You will have formed an alkene and a H+ ion.