Engineering :: Thermodynamics

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The triple point for carbondioxide is at about -56.7 C and about 5 atm, pressure. It means that

[A].	When solid CO2 is exposed to 1 atm pressure it begins to change directly to gas	[B].	When CO2 is exposed to a below 5 atmosphere pressure only solid and liquid phase exist together
[C].	Below 57.7 C CO2 exists only in liquid form	[D].	Above 56.7 C CO2 exists only as a liquid
[E].	Mass transfer at triple point is maximum

Answer: Option A