alcohols Flashcards
1
Q
Production of ethanol
A
- Fermentation of sugars
2. Ethene over steam and phosphoric acid
2
Q
Fermentation
A
yeast + glucose —> ethanol + carbon dioxide using anaerobic respiration
3
Q
advantages of fermentation
A
- uses renewable resources
- uses gentle temperatures and ordinary pressure
4
Q
disadvantages of fermentation
A
- uses a batch process so is inefficient
- the rate of production is slow
- produces very impure ethanol that needs further processing
5
Q
ethene over steam and phosphoric acid
A
hydration - ethene + water —–> ethanol
Phosphoric acid is the catalyst
6
Q
advantages of hydration
A
- fast reactions
- produces pure ethanol
7
Q
disadvantages of hydration
A
- uses nonrenewable resources
- uses high temperatures and pressures
8
Q
ethanol —–>ethene + water
A
dehydration
9
Q
catalyst for dehydration
A
aluminum oxide
10
Q
C2H5(OH)
A
ethanol
11
Q
homologous series
A
compounds and molecules that react in similar ways (have similar chemical properties) but their physical properties change as you change their lengths.
