of asser- tion b) both assertion and reason are true but reason is not the correct explanation of assertion c) assertion is true but reason is false d) both assertion and reason are false . What is the density of N gas at o C and . atm pressure? (R = .
L atm K– mol – ) a) . g/L b) . g/L c) . g/L d) .
g/L . Which of the following diagrams correctly describes the behaviour of a fixed mass of an ideal gas ? (T is measured in K) a) P b) PV c) d) All of these . 25g of each of the following gases are taken at o C and mm Hg pressure.
Which of these will have the least volume ? a) HBr b) HCl c) HF d) HI 11th Std Chemistry 11th Std Chemistry - - - - II. Write brief answer to the following questions: . State Boyle's law.
. Name two items that can serve as a model for Gay Lusaac’ law and explain. . Give the mathematical expression that relates gas volume and moles.
. What are ideal gases? In what way real gases differ from ideal gases. .
Can a Van der Waals gas with a= be liquefied? explain. . Suppose there is a tiny sticky area on the wall of a container of gas.
Molecules hitting this area stick there permanently. Is the pressure greater or less than on the ordinary area of walls? . Explain the following observations a) Aerated water bottles are kept under water during summer b) Liquid ammonia bottle is cooled before opening the seal c) The tyre of an automobile is inflated to slightly lesser pressure in summer than in winter d) The size of a weather balloon becomes larger and larger as it ascends up into larger altitude .
Give suitable explanation for the following facts about gases. a) Gases don’t settle at the bottom of a container b) Gases diffuse through all the space available to them . Suggest why