Colligative Properties depend on conc. of a sol’n Compared to solvent’s… a sol’n w/that solvent has a… freezing point (NFP) FP …normal …lower boiling (NBP) BP …normal …higher Applications (NOTE: Data are fictitious.) 1. salting roads in winter FP BP 100oC water 0oC (NFP) (NBP) water + a little salt 103oC –11oC water + more salt 105oC –18oC 2. antifreeze (AF) /coolant FP BP
Colligative Properties depend on conc. of a sol’n Compared to solvent’s… a sol’n w/that solvent has a… …normal freezing point (NFP) …lower FP …normal boiling (NBP) …higher BP Applications (NOTE: Data are fictitious.) 1. salting roads in winter FP BP water 0oC (NFP) 100oC (NBP) water + a little salt –11oC 103oC water + more salt –18oC 105oC 2. antifreeze (AF) /coolant FP BP
u10ohnotes18f2005.docx