For the process, CO2(s)→CO2(g):
Both and
are positive
is negative and
is positive
is positive and
is negative
Both and
are negative
As learnt in
Enthalpy of Sublimation -
Amount of enthalpy change to sublimise 1 mole solid into 1 mole vapour at a temperature below its melting point
- wherein
and
Entropy for phase transition at constant pressure -
- wherein
Transition Fusion, Vaporisition, Sublimation
Enthalpy
Internal Energy
Transitional temperature
Both and
are positive
Option 1)
Both and
are positive
This option is correct
Option 2)
is negative and
is positive
This option is incorrect
Option 3)
is positive and
is negative
This option is incorrect
Option 4)
Both and
are negative
This option is incorrect