A) When calcium hydroxide (Ca(OH)2, M = 74.09 g/mol) is dissolved in water at T = 25.0 ï°C, the temperature of the water increases. Based on this observation, would you expect the solubility of calcium hydroxide in water to increase, decrease, or stay approximately constant when the initial temperature of the water is changed to T = 75.0 ï°C? Justify your answer.
B) At T = 373. K the vapor pressure of pure 1,2 dibromoethane (E) is pE* = 338. torr, and the vapor pressure of pure 1,2 dibromopropane (P) is pP* = 214. torr. The total pressure above a liquid solution of 1,2 dibromoethane and 1,2 dibromopropane at T = 373. K is ptotal = 292. torr. Assuming these two liquids form an ideal solution, what is the value for XE, the mole fraction of 1,2 dibromoethane in the solution?
A) When calcium hydroxide (Ca(OH)2, M = 74.09 g/mol) is dissolved in water at T = 25.0 ï°C, the temperature of the water increases. Based on this observation, would you expect the solubility of calcium hydroxide in water to increase, decrease, or stay approximately constant when the initial temperature of the water is changed to T = 75.0 ï°C? Justify your answer.
B) At T = 373. K the vapor pressure of pure 1,2 dibromoethane (E) is pE* = 338. torr, and the vapor pressure of pure 1,2 dibromopropane (P) is pP* = 214. torr. The total pressure above a liquid solution of 1,2 dibromoethane and 1,2 dibromopropane at T = 373. K is ptotal = 292. torr. Assuming these two liquids form an ideal solution, what is the value for XE, the mole fraction of 1,2 dibromoethane in the solution?
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