4. Sucrose weighing 68.4 g is dissolved in 1000 g of water. Calculate: a) the vapor pressure over the solution; b) osmotic pressure; c) freezing point; d) the boiling point of the solution. The vapor pressure of pure water at 20 C is 2314.9 Pa. The cryoscopic and ebullioscopic constants of water are 1.86 and 0.52 (K * kg) / mol, respectively.

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