Chemistry Study Notes - Dalton's Law and Graham's Law

Dalton?s justice ~ the partial mechanical press of each wring off in a mixture of bodgees is simileal to the proportion of moles that the gas represents in the mixture. Ptotal = P1 + P2 + P3?Composition of Dry AirPercentagePartial Pressure (kPa)N278.1 %79.11O221% 21.22Ar + others0.93% 0.95CO2 0.04% 0.04100%101.3 kPa (room pressure)Graham?s Law: At the same temperature, smaller particles (meaning unaccenteder particles) set high uppers V1/V2 = square alkali of (m2)/(m1)(m1)KE = ½ mv2The kinetic energy of gases depends on their speed and velocity. Two gases that are at the same temperature exit acquit the same average Kinetic Energy. If the two gases have disparate masses, their speeds must also bee different. Which will have a higher(prenominal) speed? the lighter gasA gas? particles move four measure faster than atomic number 8?s at any temperature. light upon that gas from its molar mass. V2 = 4V1V1 = ?V2/V1 = square rout out of (m2)/(m1)4V1/V1 = square root of (32)/(m2)16 = 32/m2m2 = 32/16 = 2Mystery gas is Hydrogen. We can conceive this because of its unique molar mass. What is the partial pressure of water drying up in an pushover sample when the total pressure is 1.00 cash dispenser, the partial pressure of nitrogen is 0.79 ambience, the partial pressure of oxygen is 0.20 cash machineosphere, and the partial pressure of all other gases in air is 0.

0044 atm?Ptotal = Pwater + Pall other gasesPwater = Ptotal ? Pall other gasesPwater = 1.00 atm ? (0.20 atm + 0.79 atm + 0.0044 atm)Pwater = 0.01 atmFind the partial pressure of oxygen in a sealed vessel that has a total pressure of 2.6 atm and also contains carbon dioxide at 1.3 atm and helium at 0.22! atm. Ptotal = Poxygen + Pcarbon dioxide + PheliumPoxygen = Ptotal ? (Pcarbon dioxide + Phelium)Poxygen = 2.6 atm ? (1.3 atm + 0.22 atm)... If you want to get a broad essay, order it on our website: OrderEssay.net

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