Chapter 16 - Solutions

16.3◦ The magnitude of the freezing-point depression isproportional to the number of solute particles dissolvedin the solvent and does not depend upon their identity.◦ The freezing point of water decreases by 1.86°C forevery mole of particles that the solute forms whendissolved in 1000 g of water.◦ This is called the freezing point depression constant forwater.16.3• The freezing-pointdepression of aqueoussolutions makes walks anddriveways safer whenpeople sprinkle salt on icysurfaces to make ice melt.The melted ice forms asolution with a lowerfreezing point than that ofpure water.31