[填空题]
Dry ice, solid ,is commonly used as a cooling or freezing agent in the medical and food industries.
1.Write an equation representing the sublimation of .
2.The enthalpy of sublimation for is +26.1kJ mol and the absolute entropy of in the solid state is 51.1 J K mol.
2.1.Using section 12 (Section 13- 2025 Syllabus) of the data booklet, calculate the entropy change associated with the sublimation of .
ΔS=+ J K mol 2.2.Using your answer to (bi), calculate the Gibbs free energy change for the sublimation of at K.
ΔG=- kJ mol
3.Calculate the minimum temperature at which sublimates.
T> K
Important note: The section numbers mentioned in the video solution are specific to the 2024 syllabus.
You can refer to the question stem to find the section numbers in the 2025 syllabus.