Ethanol is produced by catalytic addition of steam to ethene and also by fermentation. Which row gives one advantage and one disadvantage of using catalytic addition of steam to ethene instead of fermentation?
- Aadvantage: fast; disadvantage: the product is impure
- Badvantage: fast; disadvantage: uses non-renewable materials
- Cadvantage: the product is pure; disadvantage: slow
- Dadvantage: uses renewable materials; disadvantage: slow