Iodine does not dissolve in water because water is an extremely polar molecule, while iodine exists in the diatomic form of I2 , and is therefore non-polar, and will not dissolve in water. It is a non-polar molecule because the carbon-hydrogen bond has a small electronegativity difference of around 0.4 .Click to see full answer. Accordingly, why does iodine dissolve in water?Iodine has a very low solubility in water because it is non-polar. As a result, an I2 molecule cannot form strong interactions with water molecules (no hydrogen bonds or permanent dipole-dipole interactions), whereas water molecules do form strong interactions with each other.Similarly, does iodine crystals dissolve in water? Iodine does not dissolve in water, but it does dissolve in a solution of an iodide in water. It dissolves easily in organic solvents. In this way, is iodine soluble or insoluble? Elemental iodine is slightly soluble in water, with one gram dissolving in 3450 ml at 20 °C and 1280 ml at 50 °C; potassium iodide may be added to increase solubility via formation of triiodide ions, among other polyiodides. Nonpolar solvents such as hexane and carbon tetrachloride provide a higher solubility.How does iodine react with water?Iodine reacts with water to some extent to give a mixture of hydroiodic acid and iodic(I) acid – also known as hypoiodous acid. The reaction is reversible, and at any one time only about 0.05% of the iodine molecules have actually reacted and others remain as molecules.
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