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States of matter

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Question 27

During the industrial freeze-drying of a pharmaceutical product, water (H2O\text{H}_2\text{O}H2​O) is first frozen into ice. The ambient pressure is then reduced, allowing the ice to transition directly into water vapour to be removed. Finally, this water vapour is collected on a condenser at a very low temperature, where it converts directly back into solid ice.

What are the names of these two phase transitions respectively?

Sublimation and deposition\text{Sublimation and deposition}Sublimation and deposition

Evaporation and condensation\text{Evaporation and condensation}Evaporation and condensation

Sublimation and condensation\text{Sublimation and condensation}Sublimation and condensation

Evaporation and deposition\text{Evaporation and deposition}Evaporation and deposition

States of matter Questions

  1. GCSE
  2. /Chemistry
  3. /States of matter