username3774332
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can someone explain this part in the spec

'describe the production of ethanol by fermentation of carbohydrates in aqueous solution, using yeast to provide enzymes'.

'explain how to obtain a concentrated solution ethanol by fractional distillation of the fermentation mixture'
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username2775496
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From what I can remember from GCSE

Enzymes in yeast ferment glucose in anaerobic respiration to form CO2 and ethanol

As the fermentation reaction will take place in an aqueous solution, there will be water present. Use fractional distillation to remove the liquid with the lower boiling point. You have separated water and ethanol. As the ethanol will contain hopefully no water, it will be concentrated
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