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Question

Which oxide of phosphorus is used extensively as a drying agent?


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Solution

Drying agent

  • A drying agent is a chemical that removes water from a solution of an organic molecule.
  • Sulfuric acid concentrated phosphoric acid and hot aluminum oxide are commonly used as drying agents.

Phosphorus pentoxide

  • The acidic oxide of phosphorus is phosphorus pentoxide P2O5.
  • Phosphorus pentoxide is a powerful drying agent.
  • It is employed as a desiccating and dehydrating agent because it is a phosphoric anhydride.

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