Ethanol is produced by adding steam to ethene using a catalyst, and also by fermentation. Which row gives one benefit and one drawback of using the 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