CHEM 1A Lecture Notes - Ethylene, Cyan, Partial Pressure

• School: UC-Irvine
• Department: Chemistry
• Course: CHEM 1A
• Professor: Amanda Brindley

Document Summary

Dalton s law of partial pressures - total pressure of mixture of gasses is equal to the sum of the individual components. Ptotal = pa + pb + pc. Ptotal = (na + nb + nc) rt/v. Partial pressure - pressures of individual components of gassesa = Mole fraction - amount of moles of part over moles of the whole. Partial pressure is x multiplied by total pressure. 1. solve for mole fraction: total particles = 10. 4 purple / 10*10 = 4 units. 1 cyan / 10*10 = 1 unit. 3 pink (6 atoms, diatomic, 1 molecule) = 3 / 10*10 = 3 units. Given that the total pressure is 30 now 4 purple / 10*30 = 12 units. 1 cyan / 10*30 = 3 units. 1. 20 atm = 88. 6% ch4, 8. 9% c2h6, 2. 5% c3h8, Total = 0. 200 atm + 2. 00 atm = 2. 20 atm. 1. 00l * 1. 00 atm = m2 * 5. 00 l = 0. 200 atm.