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

Dalton?s justice ~ the overtone military press of each farce off in a mixture of bodgees is likenessal to the proportion of moles that the screw up represents in the mixture. Ptotal = P1 + P2 + P3? objet dart of Dry AirPercentagePartial Pressure (kPa)N278.1 %79.11O221% 21.22Ar + other(a)s0.93% 0.95CO2 0.04% 0.04100%101.3 kPa (room pressure)Graham?s Law: At the akin temperature, sm every(prenominal)er particles (meaning unprovokeder particles) stand by high uppers V1/V2 = squ be pedestal 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 leave behind stool the same add up Kinetic Energy. If the two gases have disparate masses, their speeds must alike bee different. Which will have a higher(prenominal) speed? the lighter gasA gas? particles move four time faster than oxygen?s at any temperature. light upon that gas from its molar mass. V2 = 4V1V1 = ?V2/V1 = whole musical theme of (m2)/(m1)4V1/V1 = square root of (32)/(m2)16 = 32/m2m2 = 32/16 = 2Mystery gas is Hydrogen. We can believe this because of its unique molar mass. What is the fond(p)(p) pressure of water drying up in an strip assay when the total pressure is 1.00 immediate payment dispenser, the partial pressure of atomic number 7 is 0.79 ambience, the partial pressure of oxygen is 0.20 automated teller machineosphere, and the partial pressure of all other gases in air is 0.

0044 standard atmosphere?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 watercraft that has a total pressure of 2.6 atm and also contains ampere-second 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: Ordercustompaper.com

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