45 g of ethylene glycol (C₂H₄O₂) is mixed with 600 g of water. Calculate
(i) the freezing point depression and 
(ii) the freezing point of the solution.

Calculate the boiling point of solution when 4 g of MgSO₄ (M = 120 g mol^-1) was dissolved in 100 g of water, assuming MgSO₄ undergoes complete ionization. (K_b for water = 0.52 K kg mol^-1)

A 5 percent solution (by mass) of cane-sugar (M.W. 342) is isotonic with 0.877% solution of substance X. Find the molecular weight of X.

Calculate the boiling point of a 1M aqueous solution (density 1.04 g mL^-1) of potassium chloride (K_b for water = 0.52 K kg mol^-1, Atomic masses : K = 39 u, CI = 35.5 u). Assume, potassium chloride is completely dissociated in solution.

At 10\(°\) C, the average osmotic pressure of blood is 8.8 atm. Find the total concentration of the various constituents in the blood. Assuming that the concentration is the same as the molarity, find the freezing point of the solution (K_f for water = 1.86 K kg mol^-1)

(i) What type of deviation is shown by a mixture of ethanol and acetone? Give reason.
(ii) A solution of glucose (molar mass = 180 g mol^-1) in water is labelled as 10 % (by mass). What would be the molality and molarity of the solution?
(Density of solution = 1.2 g mL^-1)

(a) Define the following terms:
(i) Mole fraction,
(ii) Ideal solution.
(b) 15.0 g of an unknown molecular material is dissolved in 450 g of water. The resulting solution freezes at - 0.34 \(°\)C. What is the molar mass of the material? [K_f for water=1.86 K Kg mol^-1]

(a) Calculate the freezing point of solution when 1.9 g of MgCI₂ (M = 95 g mol^-1) was dissolved in 50 g of water, assuming MgCI₂ undergoes complete ionization. (K_f for water = 1.86 K kg mol^-1)
(b) (i) Out of 1 M glucose and 2 M glucose, which one has a higher boiling point and why?
(ii) What happens when the external pressure applied becames more than the osmotic pressure of solution?

(a) When 2.56 g of sulphur was dissolved in 100 g of CS₂, the freezing point lowered by 0.383 K. Calculate the formula of sulphur (S_X). (K_f for CS₂ = 3.83 K kg mol^-1, Atomic mass of sulphur = 32 g mol^-1).
(b) Blood cells are isotonic with 0.9 % sodium chloride solution. What happens if we place blood cells in a solution containing;
(i) 1.2 % sodium chloride solution?
(ii) 0.4% sodium chloride solution?