Ooooooops!

[Xavier_Onassis]

Iodine melts at 113.7° C. That is above the boiling point of water.

If you add KI tablets with a portion of elemental iodine in them at 20°C, are you saying that the Iodine will sublimate as a result into a gas? I would imagine that it would mostly precipitate out in solid form at the bottom of the solution, not gas off at such a low temperature.

[R.R.]

it still has a big fat rat living there though, his name is Richard.

Hahahaha!

[Amianthus]

Iodine melts at 113.7? C. That is above the boiling point of water.

That is the point at which no more solid form exists. The "triple point" is lower (this is the point at which there is an equal amount of the three main phases - liquid, gaseous, and solid). At room temperature, it is mainly solid with a small amount of liquid on the surface and a haze of gaseous form sublimating out. Indeed, when heating the solid to the melting point, it is difficult to see the conversion because of the cloud of gaseous iodine that forms around it.

[Xavier_Onassis]

At room temperature, say 20° C, is Iodine going to become a gas when placed in water at the same temperature? That does not sound likely to me.