Which of the following statements are evidence that gases do not always behave i
ID: 589886 • Letter: W
Question
Which of the following statements are evidence that gases do not always behave ideally? Check all that apply A gas mixture contains HBr, NO and CHe at STP If a tiny hole is made in the container, which gas will effuse fastest? coz gas becomes dry ice (solid CO2) at 1 atm and-78.5 . when two gases are mixed, they follow Dalton's law of partial pressures. It is impossible to compress a gas enough so that it takes up no volume At 4 K and 1 atm, helium is a liquid. HBr They all emuse at the same rate. Which gas molecules have the highest average kinetic energy at this temperature? HBr O NO O They all have the same average kinetic energy In this probiem, your answers should be mathematical expressions involving a variable. a) Consider an ideal gas with an absolute temperature of T,. To what temperature would you need to heat the gas to double its pressure? Express your answer in terms of T b) Consider an ideal gas with a volume of To what volume would you need to compress the gas to double its pressure? Express your answer in terms of VExplanation / Answer
According to Graham's law of effusion rate of effusion is inversely proportional to square root of molecular mass of the gas.
so the molecular weights of HBr, NO2 and C2H6 are 81, 46 and 30 respectively. Hence under STP conditions C2H6 gas effuses first compare to other two gases.
Kinetic energy of molecules depends upon temperature and not on the type of gas molecules. Hence the given three gases are all have same average kinetic energy at that teperature
a)
According to Galussac's law, at a constant volume and at constant number of moles,
T1/T2 = P1/P2
T1 = initial Temperature
T2 = final temperature
P1 = initial pressure
P2 = Final pressure
T1/T2 = P/2P from the given data
T2 = 2T1 so temperature will also doubled.
According to Charle's law, At constant temperature and at constant number of moles,
V1/V2 = P1/P2
V1 = initial volume
V2 = final volume
P1 = initial pressure
P2 = Final pressure
V1/V2 = P/2P from the given data
V2 = 2V1 so volume also will doubled
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