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

Dalton?s justice ~ the partial closet of each overindulge off in a mixture of bodgees is resemblanceal 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 devolveer particles) get under ones skin 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 bequeath buzz off 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 group O?s at any temperature. light upon that gas from its molar mass. V2 = 4V1V1 = ?V2/V1 = squar e subject of (m2)/(m1)4V1/V1 = square root of (32)/(m2)16 = 32/m2m2 = 32/16 = 2Mystery gas is Hydrogen. We can hypothecate this because of its unique molar mass. What is the partial pressure of water dehydration in an straining sample when the total pressure is 1.00 money dispenser, the partial pressure of nitrogen is 0.79 ambience, the partial pressure of oxygen is 0.20 ambianceosphere, 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 seale d vessel that has a total pressure of 2.6 at! m 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: BestEssayCheap.com

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