Making ethanol by the hydration of ethene
2 marks · HardState the temperature and pressure conditions required for the industrial hydration of ethene to make ethanol.
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Temperature: 300°C; Pressure: 60–70 atmospheres
Also accept: Temperature: around 300°C; Pressure: 60 to 70 atmospheres; Temp = 300°C, Pressure = 60-70 atm; Around 300 degrees Celsius; pressure 60–70 atm
Common mistakes: Giving fermentation conditions; Incorrect temperatures (such as 30°C or 100°C); Incorrect pressure range
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Marking points
B1 · 1 mark · States the correct temperature condition: 300°C (accept: around 300°C or equivalent).
B2 · 1 mark · States the correct pressure condition: 60–70 atmospheres (accept: between 60 and 70 atm or equivalent).
Worked solution
The temperature used in the industrial hydration of ethene is 300°C.
The pressure used is 60–70 atmospheres.