Ethanol can be manufactured by the fermentation of aqueous glucose. State two conditions for fermentation. 1 2

Chemistry

IGCSE&ALevel

CAIE

Exam No：0620_s23_qp_33 Year：2023 Question No：7(d)

Answer:

11.6.1.1. fermentation of aqueous glucose at 25–35 °C in the presence of yeast and in the absence of oxygen

11.6.1.2. catalytic addition of steam to ethene at 300 °C and 6000 kPa / 60 atm in the presence of an acid catalyst

11.6.2. Describe the combustion of ethanol

11.6.3.1. a solvent

11.6.3.2. a fuel

11.6.4.1. fermentation

11.6.4.2. catalytic addition of steam to ethene

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