5. Pyridine and water form an azeotropic mixture containing 59% pyridine and 41% water and boiling at a temperature of 365 K. What will be distilled and what will remain as a residue when distilling mixtures containing: a) 40% pyridine and 60% water; b) 60% pyridine and 40% water? The boiling point of water is 373 K and pyridine is 388 K.

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