Which of the following relations is true for the molar entropy of sublimation of a substance? A)Δ_subS = Δ_fusS + Δ_vapS B)Δ_subS

Question

Which of the following relations is true for the molar entropy of sublimation of a substance? A)Δ_subS = Δ_fusS + Δ_vapS B)Δ_subS < Δ_vapS C)Δ_subS = Δ_fusS - Δ_vapS D)Δ_subS < (Δ_fusS + Δ_vapS₎ E)Δ_subS > (Δ_fusS + Δ_vapS₎

Quizplus · Accepted Answer

The molar entropy of sublimation (ΔS_sub) is equal to the sum of the molar entropy of fusion (ΔS_fus) and the molar entropy of vaporization (ΔS_vap). This is because sublimation involves a transition from solid to gas, effectively combining the processes of melting (fusion) and then vaporizing.

Which of the Following Relations Is True for the Molar