The triple point of iodine is at 0.12 atm and 115°C.Thus, liquid I₂ A)is more dense than I₂ (s). B)cannot exist above 115°C. C)is liquid at room temperature. D)cannot have a vapor pressure less than 91 torr.

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Quizplus · Accepted Answer

The triple point is the only condition under which all three phases (solid, liquid, and gas) coexist. Below the triple point pressure, the liquid phase cannot exist, so the vapor pressure of liquid iodine cannot be less than 91 torr (0.12 atm).

The Triple Point of Iodine Is at 0