If this is not soluble in water, this must be nonpolar, if it si soluble in hexane, this must be nonpolar as well therefore, we are certain this is nonpolar substance with low vap pressure... From the list, nearest BP for that pressure is chloroform with 60ºC (vs 58.) which is ok, since no range is given. CCl4 is nonpolar In order to ensure this, you could use a chromatography with previous data, i.e. use chloroform standard and run chromatography vs. unkown. If they behave the same ( same Rf value, and retention time ) then this is most likely chloroform Solution If this is not soluble in water, this must be nonpolar, if it si soluble in hexane, this must be nonpolar as well therefore, we are certain this is nonpolar substance with low vap pressure... From the list, nearest BP for that pressure is chloroform with 60ºC (vs 58.) which is ok, since no range is given. CCl4 is nonpolar In order to ensure this, you could use a chromatography with previous data, i.e. use chloroform standard and run chromatography vs. unkown. If they behave the same ( same Rf value, and retention time ) then this is most likely chloroform.