CHM 143 Lecture Notes - Lecture 15: Potential Energy, Chemical Energy, Thermodynamics

• School: Oakland University
• Department: Chemistry
• Course: CHM 143
• Professor: Tillinger

Document Summary

The total pressure of a gas mixture is the sum of the partial pressures of the individual gases. Partial pressure related to the # particles of individual gas to the total # particles of gas in mixture. Partial pressures are proportional to the % composition in the mixture. Mole fraction between 0-1 because it"s the % in decimal form. A gas mixture of he, o2 , n2 co2, gas at 25oc exerts a total pressure of 760 mmhg. The mixture is 26. 3% he, 13. 2% o2, 13. 2% n2 % composition(not by mass by particles). What is the partial pressure of co2: must equal 100%. Composition total = 100: % composition is proportion to pressure of co2. Pco2=360 mmhg: what are the partial pressures of the other gases, check your work. Ptotal= 100 mmhg + 100 mmhg + 200 mmhg + 320 mmhg. Calculate the mass of a gas mixture that is 26. 3% he 13. 2% o2 13. 2% n2 47. 3% co2in a 0. 500l.