Question

Iodine is not soluble in water. Name two solvents that more iodine be dissolved?

Answer 1

Ethanol `(C_2H_5OH)` and hexane `(C_6H_12)`

Explanation:

Iodine is soluble in both ethanol and hexane. Iodine does not dissolve in water because water is an extremely polar molecule, while iodine exists in the diatomic form of `I_2`, and is therefore non-polar, and will not dissolve in water.

Ethanol has some polarity in its `OH` bond, but the `C_2H_4` bond is non-polar, and therefore iodine has slight solubility in ethanol.

Hexane has a chemical formula of `C_6H_12`. It is a non-polar molecule because the carbon-hydrogen bond has a small electronegativity difference of around `0.4`. Since like dissolves like, iodine will be therefore soluble in hexane.

Sources:

https://www.enotes.com/homework-help/do-iodine-dissolve-ethanol-557516

http://preparatorychemistry.com/15Bishop.pdf