What is dry oxygen?

Dry O2 is heavier than moist O2 since the vapour density of dry O2 is more than moist O2.

Dry oxygen in the laboratory

Dry oxygen can be obtained if the gas so collected is passed over a tower containing drying agents like phosphorous pentoxide, fused calcium chloride or bubbling the gas through concentrated sulphuric acid. Then the dry gas is collected by downward displacement of mercury.

  • Dry oxygen is a preferred oxygen delivery system for the patient.
  • A certain amount of moisture must be maintained in the surrounding environment while using the dry oxygen
  • the dry oxygen requires clean water in the surrounding air.

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