Anydrous formic acid cannot be obtained from its aqueous solution by simple fractional distillat....

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Anydrous formic acid cannot be obtained from its aqueous solution by simple fractional distillation
\( \mathrm{P} \)
because:
(1) Pure \( \mathrm{HCOOH} \) is unstable
(2) \( \mathrm{HCOOH} \) forms hydrogen bonds with water
(3) Boiling point of \( \mathrm{HCOOH} \) is very close to that of water
(4) Constant boiling azeotropic mixture is formed with water


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