Answered step by step
Verified Expert Solution
Question
1 Approved Answer
######Answer with full steps######### 2. Evaluating the effect of temperature on the solubility and the activity coefficient of a gaseous compound (Freon 12; dichlorodifluoromethane) in
######Answer with full steps#########
2. Evaluating the effect of temperature on the solubility and the activity coefficient of a gaseous compound (Freon 12; dichlorodifluoromethane) in fresh water and sea water. For an assessment of the global distribution of persistent volatile halogenated hydrocarbons, the solubility and activity coefficients of such compounds in natural waters need to be known. Warner and Weiss (1985) determined the solubilities of Freon 12 at 1 bar partial pressure at various temperatures in fresh water and sea water: fresh water T(C) 0.9 9.6 19.9 29.9 40.7 CW 1 bar (M) 0.0090 0.0056 0.0035 0.0025 0.0018 sea water T(C) 4.8 9.2 20.4 29.6 39.9 1 cwbar (M) 0.0049 0.0040 0.0024 0.00170.0013 (a) Estimate the solubilities (M) of Freon 12 in freshwater and seawater at 1 bar pressure at 5 and 25 Answer: fresh water for 5 and 260, 0.0071 and 0.0031 M sea wator for 5 and 25C, 0.0047 and 0.0021 M (b) Calculate the activity coefficients of Freon 12 in fresh and sea water at these temperatures using the vapor pressure-temperature data given in Problem P 8.3. Answers: fresh water for 5 and 25C, 2,170 and 2,790; sea water for 5 and 25C, 3,280 and 4,120 (c) Determine the average excess enthalpy (AWH6; kJ moll) of Freon 12 in fresh and sea water for the ambient temperature range (0 to 40C). You'll need the p-T data from Problem P 8.3 to get the enthalpy of vaporization of Freon 12. Answers: fresh water, -8,5 kJ mol: sea water, -7,6 kJ mor! (d) Based on solubilities determined in part (a) for 25C, what is the Setchenow constant ks for Freon 12? Answer: 0.34 2. Evaluating the effect of temperature on the solubility and the activity coefficient of a gaseous compound (Freon 12; dichlorodifluoromethane) in fresh water and sea water. For an assessment of the global distribution of persistent volatile halogenated hydrocarbons, the solubility and activity coefficients of such compounds in natural waters need to be known. Warner and Weiss (1985) determined the solubilities of Freon 12 at 1 bar partial pressure at various temperatures in fresh water and sea water: fresh water T(C) 0.9 9.6 19.9 29.9 40.7 CW 1 bar (M) 0.0090 0.0056 0.0035 0.0025 0.0018 sea water T(C) 4.8 9.2 20.4 29.6 39.9 1 cwbar (M) 0.0049 0.0040 0.0024 0.00170.0013 (a) Estimate the solubilities (M) of Freon 12 in freshwater and seawater at 1 bar pressure at 5 and 25 Answer: fresh water for 5 and 260, 0.0071 and 0.0031 M sea wator for 5 and 25C, 0.0047 and 0.0021 M (b) Calculate the activity coefficients of Freon 12 in fresh and sea water at these temperatures using the vapor pressure-temperature data given in Problem P 8.3. Answers: fresh water for 5 and 25C, 2,170 and 2,790; sea water for 5 and 25C, 3,280 and 4,120 (c) Determine the average excess enthalpy (AWH6; kJ moll) of Freon 12 in fresh and sea water for the ambient temperature range (0 to 40C). You'll need the p-T data from Problem P 8.3 to get the enthalpy of vaporization of Freon 12. Answers: fresh water, -8,5 kJ mol: sea water, -7,6 kJ mor! (d) Based on solubilities determined in part (a) for 25C, what is the Setchenow constant ks for Freon 12? Answer: 0.34Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started