4. Ethanol, CHOH, can be manufactured by two different processes. process 1 the catalysed addition of steam to ethene process 2 the fermentation

4. Ethanol, C₂H₂OH, can be manufactured by two different processes.

• process 1 the catalysed addition of steam to ethene

• process 2 the fermentation of glucose Describe a chemical test which could be used to positively identify the carbon dioxide formed during fermentation.