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Examveda

Sublimation temperature of dry ice (solid CO2) is __________ °C.

A. -273

B. 0

C. -78

D. 5

Answer: Option C

Solution(By Examveda Team)

Sublimation means the conversion of solid phase directly in to vapor phase (without involvement of phase liquid). Actually for every substance this direct phase conversion occurs when the substance is below its triple point pressure and corresponding temperature.
Actually one of the point where the dry ice sublimates is 1 atm pressure and corresponding temperature is $$ - {78^ \circ }C.$$

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Comments ( 2 )

  1. Plaban Chakravorty
    Plaban Chakravorty :
    6 years ago

    no its right answer is -78.5..so right ans is C

  2. Akay Nobita
    Akay Nobita :
    6 years ago

    0 is right answer

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