- Physicochemical Principles Of Pharmacy Assignment May 2022 1 Study The Phenol Water Phase Diagram Below And Answer Th 1 (167.61 KiB) Viewed 49 times
Physicochemical Principles of Pharmacy Assignment (May-2022) 1. Study the phenol/water phase diagram below and answer the following questions regarding systems occurring at 50 °C: One liquid phase h 66.8° WW Water (A) O Phenol (B) - с 1 Temperature (°C) VI WEB U Two liquid phases 11% Phenol 63% Phenol 0 1 20 40 60 80 Phenol in water (% by weight) 100 A. Calculate the amount of phenol (9) in the water-rich phase and the phenol-rich phase at point (d) 24%w/w phenol assuming total weight of system is 80g. (2 marks) B. Calculate the amount of phenol (9) in the water-rich phase and the phenol-rich phase at point (f) 50%w/w phenol assuming total weight of system is 100g. (2 marks) C. Determine the concentration (i.e. %w/w phenol in water) at which the system separates into equal weights of water-rich and phenol-rich phases, and calculate the weight of these conjugate phases assuming total weight of system is 36g. (2 marks) 2. A mixture composed of 21 g phenol and 54 g water was allowed to reach equilibrium at 30 °C. The two liquid phases that separate contain 7% and 70% phenol respectively, calculate: (4 marks) A. The weight of water-rich and phenol-rich phases. B. The amount of phenol (g) in water-rich and phenol-rich phases. C. The amount of water (g) in water-rich and phenol-rich phases. D. Saturation solubility of water in phenol at 30 °C is.. Page 1 of 1