November 26, 2015

Homework Help: CHEM

Posted by Jon on Tuesday, February 27, 2007 at 9:42pm.

Why is iodine a different colour in different solutions?

Iodine in water is a dirty brown ikky color due to the polar water molecules' attraction for the iodine atoms since they are polar, too, due to instantaneous dipole-induced dipole attractions. In hexane, however, iodine is a violet color because hexane is a non-polar solvent.

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