Making ethanol by the hydration of ethene
2 marks · NormalState the word equation and the balanced symbol equation for the reaction to produce ethanol by the hydration of ethene.
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Also accept: Ethene + steam → ethanol; CH2=CH2(g) + H2O(g) → CH3CH2OH(g); Ethene + water (steam) → ethanol; CH2=CH2(g) + H2O(g) → C2H5OH(g)
Common mistakes: Writing the combustion of ethanol; Giving the fermentation equation
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Marking points
B1 · 1 mark · Correct word equation: ethene + steam (or water) → ethanol
B2 · 1 mark · Correct balanced symbol equation: CH2=CH2(g) + H2O(g) → CH3CH2OH(g) or C2H4 + H2O → C2H5OH
Worked solution
The word equation is:
ethene + steam → ethanol
The balanced symbol equation is: