GasesLiquefaction of Gases and Critical Temperature11Choose the best answerA gas can be liquefied most effectively by:AIncreasing temperature onlyBDecreasing pressure onlyCCooling it below its critical temperature and applying pressureDHeating it above its critical temperature Like 0 Discuss 0Share
GasesGeneral Properties of Gases12Choose the best answerWhich statement is incorrect for a pure gas sample?AIt has no definite shapeBIt has no definite volumeCIt fills the containerDMolecules of the same pure gas have different molecular sizes Like 0 Discuss 0Share
GasesReal Gases and van der Waals Equation13Choose the best answerApproximate van der Waals constant a values are: O₂ = 1.36, N₂ = 1.39, NH₃ = 4.17, CH₄ = 2.25. Which gas has the strongest intermolecular attraction and can be liquefied most easily?AO₂BN₂CNH₃DCH₄ Like 0 Discuss 0Share
GasesMolecular Motions of Gases14Choose the best answerMolecules of a polyatomic gas can exhibit:ATranslational motion onlyBRotational motion onlyCTranslational, rotational and vibrational motionDVibrational motion only Like 0 Discuss 0Share
GasesAverage Kinetic Energy of Gases15Choose the best answerThe average kinetic energy of gas molecules is directly proportional to:APressureBVolumeCAbsolute temperatureDNumber of moles Like 0 Discuss 0Share