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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Related Questions on Chemical Engineering Thermodynamics
A. Maxwell's equation
B. Thermodynamic equation of state
C. Equation of state
D. Redlich-Kwong equation of state
Henry's law is closely obeyed by a gas, when its __________ is extremely high.
A. Pressure
B. Solubility
C. Temperature
D. None of these
A. Enthalpy
B. Volume
C. Both A & B
D. Neither A nor B
no its right answer is -78.5..so right ans is C
0 is right answer