(a) What is the effect of temperature on the solubility of glucose in water? (b) Ibrahim collected a 10mL each of fresh water and ocean water. He observed that one sample labeled “P” froze at 0 oC while the other “Q” at -1.3oC. Ibrahim forgot which of the two, “P” or “Q” was ocean water. Help him identify which container contains ocean water, giving rationalization for your answer. (c) Calculate Van't Hoff factor for an aqueous solution of K3 [Fe(CN)6] if the degree of dissociation (α) is 0.852. What will be boiling point of this solution if its concentration is 1 molal? (Kb=0.52 K kg/mol) OR (a) What type of deviation from Roult’s Law is expected when phenol and aniline are mixed with each other? What change in the net volume of the mixture is expected? Graphically represent the deviation. (b) The vapour pressure of pure water at a certain temperature is 23.80 mm Hg. If 1 mole of a nonvolatile non- electrolytic solute is dissolved in 100g water, Calculate the resultant vapour pressure of the solution.
,