us solution containing sodium chloride that has a density of 1.01 g/mL. Assume the behaves
ideally. The freezing point of this solution at 1.0 atm is -1.28 °C. solution (a) Calculate the
percent composition of this solution (by mass). (Kr for water 1.86 Ckg/mol) (3pts) (b) Why is the
observed freezing-point depression for electrolyte solutions sometimes less than the calculated
value? Is the difference greater for concentrated or dilute solutions? (3pts)
Solution
change in freezing point=M*i*kf.
This is because,the additives it contain like NaCl in this question,they break into respective ions
increasing the i.
This increases ions reduce the freezing point