alleryTo dry ethanol beyond its azeotrope with water, a desiccant can be added such as
Aammonium nitrate
Bsodium chloride
Ccalcium carbonate
Dpotassium carbonate
Answer & Solution
Correct answer: D. potassium carbonate
Potassium carbonate binds the dissolved water as water of crystallisation, letting ethanol be purified past the azeotrope.
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