Making ethanol by the hydration of ethene
2 marks · HardGive the word equation and the balanced symbol equation for making ethanol by hydration of ethene.
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Word equation: ethene + steam → ethanol; Symbol equation:
Also accept: Word: ethene + water (steam) → ethanol; Symbol: CH2=CH2(g) + H2O(g) → CH3CH2OH(g)
Common mistakes: Writing the fermentation equation instead; Incorrect product formula
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Marking points
B1 · 1 mark · Correct word equation: ethene + steam (or water) → ethanol
B2 · 1 mark · Correct balanced symbol equation:
Worked solution
Word equation: ethene + steam → ethanol