Kitzmiller-Spring2018 CHM113 14. Select the incorrect statement. pimision is the
ID: 1043309 • Letter: K
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Kitzmiller-Spring2018 CHM113 14. Select the incorrect statement. pimision is the process where two gases gradualy mix together based on their kinetie a) properties. Dalton's law of partial pressures describes the process when a gas molecule escapes through a tiny hole into an evacuated space. Real gases behave like ideal gases at relatively low pressure and/or high temperatures. The SI unit for pressure is Pascal. c) d) 15. Select the correct statement related to the kinetic molecular theory. a) Gas molecules constantly move in discontinuous, non-random motion. b) The volume of individual gas molecules in a container is significant compared to the c) Repulsions and attractions between gas molecules are negligible. volume of the container The average kinetic energy of a gas is indirectly proportional to the absolute temperature d) Select the correct statement regarding the application of the kinetic molecular theory a) If pressure is applied to a sample of gas, it is difficult to compress its volume because b) If someone sprays perfume in one corner of the room, eventually a person on the other c) Molecular motion of gas particles increases with increasing temperature because there is d) Hydrogen gas would travel slower than neon gas because molar mass is directly related to 16. there is not much empty space between gas particles. side of the room cannot smell it because gas particles do not move. an increase in the average kinetic energy average kinetic energy Select the flask with the highest pressure assuming the flasks are drawn to scale in the image below and contain the same number of molecules. 17. 273 K 300 K 325 K 400 K a) Flask 4 b) Flask 3 c) Flask 2 d) Flask 1 Flask 1 Flask 2 Flask 3 Flask 4Explanation / Answer
14) b: Dalton's law of partial pressure states that in a container having several non-reacting gases, the total pressure exerted on the walls of the container is equal to the sum of the partial pressure of the individual gases present.
15) c: As the gas molecules are moving very fast and randomly in different direction kinetic molecular theory doesn't take in account the repulsion and attraction between gas molecules as it is very small.
16) c: According to kinetic molecular theory, the average kinetic energy of the molecules is directly proportional to the temperature.
17) a: According to kinetic molecular theory, the average kinetic energy of the molecules is directly proportional to the temperature. As temperature increase molecular motion increases which in turn increase the pressure.
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