Carbon Tetrachloride Substitute The relative solubility of a solute in two solvents has traditionally been demonstrated in introductory chemistry lahoratorv courses bv rnixine iodine water with carbon tetrachloride and notine the disaooearance of brown color from the iodine water and appearance of v i a h t color in the rnrhon trtmrhloride layer. In w w uf chs rnreinogrnir propertier oirnrhon tetrachlor~dr,it 1% impwotiw thac n witnhlc sohst~tuw!'or the or~nnicsolvent be wed. Substirutiun ofn-hruanr for the m r h m trrrnchluridr pmdurrs the same rfircc. l ' h r only dift'crrner ir char the hrxnnr lnycr is the upprr one rvhrrena rhs m r h m tetrachloride layer was the lower one.
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Charles M. W r n n Eastern Connecticut State College Willimantic. CT 06226
728 / Journal of Chemical Education
