The Effect of Temperature on the Solubility of Carbon Dioxide in Water Under Constant Pressure
Experiment No ____
2.0 hours
D1=2,D2=1,D3=0
The Effect of Temperature on the Solubility of Carbon Dioxide in Water under Constant Pressure
Beijing World Youth Academy
Subject: Chemistry
Student name: YeiYoung Choo
Candidate number: 000791 011
January 21, 2009 Teacher Helen Xu
The Effect of Temperature on the Solubility of Carbon Dioxide in Water under Constant Pressure
(Evaluated for Design)
Research Question
What is the effect of temperature on the solubility of carbon dioxide gas in de-ionised water under constant pressure?
Introduction Temperature is known as one of the factors that affect the solubility of a gas in its solvent. Because the enthalpy of solution for gases dissolved in waters is usually negative (Reger, 2009; 482), students may hypothesize that the increase in the temperature will decrease the solubility of carbon dioxide in water and the decrease in the temperature will increase the solubility of carbon dioxide in water. In this experiment, the solubility of carbon dioxide in the water of selected temperatures—0°C, 20°C, 40°C and 60°C—will be tested by using the carbon dioxide gas prepared from the reaction between calcium carbonate and hydrochloric acid and dissolving it in de-ionised water within a gas syringe. In regards to the temperature, the gas will not be heated directly but the temperature will be manipulated according to the temperature of the solvent, which is de-ionised water. The temperature gas will be affected when thoroughly shaking the de-ionised water of a selected temperature with it in the gas syringe and also when putting the gas syringe into the beaker in which there would be heat transfer through the wall of the barrel (which is made of glass). As for pressure, even though the pressure will not be measured to keep constant in the experiment, it will be kept controlled for each trial of dissolving carbon dioxide by filling the same amount of gas in a gas syringe and
2.0 hours
D1=2,D2=1,D3=0
The Effect of Temperature on the Solubility of Carbon Dioxide in Water under Constant Pressure
Beijing World Youth Academy
Subject: Chemistry
Student name: YeiYoung Choo
Candidate number: 000791 011
January 21, 2009 Teacher Helen Xu
The Effect of Temperature on the Solubility of Carbon Dioxide in Water under Constant Pressure
(Evaluated for Design)
Research Question
What is the effect of temperature on the solubility of carbon dioxide gas in de-ionised water under constant pressure?
Introduction Temperature is known as one of the factors that affect the solubility of a gas in its solvent. Because the enthalpy of solution for gases dissolved in waters is usually negative (Reger, 2009; 482), students may hypothesize that the increase in the temperature will decrease the solubility of carbon dioxide in water and the decrease in the temperature will increase the solubility of carbon dioxide in water. In this experiment, the solubility of carbon dioxide in the water of selected temperatures—0°C, 20°C, 40°C and 60°C—will be tested by using the carbon dioxide gas prepared from the reaction between calcium carbonate and hydrochloric acid and dissolving it in de-ionised water within a gas syringe. In regards to the temperature, the gas will not be heated directly but the temperature will be manipulated according to the temperature of the solvent, which is de-ionised water. The temperature gas will be affected when thoroughly shaking the de-ionised water of a selected temperature with it in the gas syringe and also when putting the gas syringe into the beaker in which there would be heat transfer through the wall of the barrel (which is made of glass). As for pressure, even though the pressure will not be measured to keep constant in the experiment, it will be kept controlled for each trial of dissolving carbon dioxide by filling the same amount of gas in a gas syringe and
Bibliography: Hefter, G.. T. and Reginald P. T. Tomkins, The Experimental Determination of Solubilities. ed 3. New York: John Wiley and Sons, 2003. Oxford University. “Chemical Safety Data: Hydrochloric Acid.” Dr Hugh Cartwright - Hands-on Science. http://cartwright.chem.ox.ac.uk/hsci/chemicals/hydrochloric_acid.html (accessed January 30, 2010). Reger, Daneil L., Scott R. Goode, and David W. Ball. Chemistry: Principles and Practice. New York: Cengage Learning, 2009. -------------------------------------------- [ 1 ]. Determining the solubility of gas requires purification of the liquid solvent and thorough degassing of the solvent. Hefter, G.. T. and Reginald P. T. Tomkins, The Experimental Determination of Solubilities. ed 3 (New York: John Wiley and Sons, 2003), 102. [ 2 ]. Must wear safety glasses because hydrochloric acid is toxic and corrosive. Oxford University. “Chemical Safety Data: Hydrochloric Acid.” Dr Hugh Cartwright - Hands-on Science. http://cartwright.chem.ox.ac.uk/hsci/chemicals/hydrochloric_acid.html (accessed January 30, 2010). [ 3 ]. Helpful to wear safety gloves even though the concentration is not too high. Oxford University, “Chemical Safety Data: Hydrochloric Acid.” Dr Hugh Cartwright - Hands-on Science, http://cartwright.chem.ox.ac.uk/hsci/chemicals/hydrochloric_acid.html (accessed January 30, 2010).