Science, asked by bcaaditya155, 1 year ago

name two substances which show sublimation

Answers

Answered by Evanbo222
2

Answer:

Substances that show sublimation are iodine, dry ice, menthol, and camphor

Explanation:

  • Sublimation is the process of changing or transitioning from a solid to a gaseous state without entering the liquid state.
  • De-sublimation or deposition is the inverse of this process, in which the gas transitions straight to the solid phase.
  • Sublime is the solid material that turns to gas, whereas sublimate is the solid formed by cooling the vapors.
  • Sublimation is an endothermic reaction, meaning it absorbs energy, whereas deposition is an exothermic reaction, meaning it releases energy.
  • Sublimation happens when certain molecules absorb heat energy, gaining significantly more energy than their neighbors and so overcoming the laws of attraction and escaping into the vapor phase.
  • The heat or energy necessary to shift the state of a substance from solid to gas is known as the enthalpy of sublimation, and it is different for each substance. It is commonly stated as KJ/mol or even KJ/kg.
  • Sublimation is observed in substances such as iodine, dry ice, menthol, and camphor.

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