Why Does Iodine, (S), Spontaneously Sublime at Room Temperature

question 28

Multiple Choice

Why does iodine, (s) , spontaneously sublime at room temperature?

• A) The contact of iodine, (s), with the water vapor in the air causes the sublimation process.
• B) Iodine, (s), pulls from the air as it self-oxidizes under sublimation to (g).
• C) There is an increase in entropy as solid iodine, (s), sublimes into iodine vapor, (g), because in the gaseous phase energy is more readily dispersed.
• D) The reaction of (s) subliming to (g) is highly exothermic and therefore proceeds spontaneously.

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