After the snow storm, salttrucks are usually sent to spread salt, usually sodium chloride, onroads and
sidewalks to prevent ice from forming in the sub-zero weather. Thefreezing point of water is exactly 0ºC but the melting pointcan be lowered by the addition of sodium chloride.
(a) What would be the freezing point of the solution if 175 g of sodium chloride (NaCl) is added to 1.00 kg of water? Kf of water is1.86 ºC·kg/mol.
(b) Calcium chloride (CaCl2) is also used for de-icing. What would be the freezing point of the solution if 175 g of calciumchloride (CaCl2) is added to 1.00 kg of water?