Which of the following is maximum boiling azsotrope a)ch3cooh+pyridine b) h2o+ethanol c)cyclohexane+ethanol d) h2o + methanol
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Answer :- a)Ch3COOH + Pyridine.
Reason
Maximum boiling azeotropes is formed by liquids which shows negative deviation from Raoult's law.
- A mixture of water and alcohol always shows positive deviation as hydrogen bonding between water-alcohol is lesser than water-water hydrogen molecule.
- Since the pair of acetic acid and pyridine is acid-base pair, they will have more effective bonding than the individual one.
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