Which of the following is true of the deposition of a gaseous substance? A) ΔS° = 0 and ΔH° = 0. B) ΔS° 0 and ΔH° 0. C) ΔS° 0. D) ΔS°

Question

Which of the following is true of the deposition of a gaseous substance? A) ΔS° = 0 and ΔH° = 0. B) ΔS° > 0 and ΔH° > 0. C) ΔS° < 0 and ΔH° > 0. D) ΔS° < 0 and ΔH° < 0. E) ΔS° > 0 and ΔH° < 0.

Quizplus · Accepted Answer

The deposition of a gaseous substance involves a phase change from gas to solid. This process is characterized by a decrease in entropy (ΔS° < 0) as the gas molecules become more ordered in a solid state. The process is exothermic, meaning heat is released (ΔH° < 0) as the gas molecules lose energy and bond together to form a solid. Therefore, the correct answer is option D.

Which of the Following Is True of the Deposition of a Gaseous