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What is an ideal gas? - Physics

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प्रश्न

What is an ideal gas?

नियम
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उत्तर

An ideal or perfect gas is a gas which obeys the gas laws (Boyle’s law, Charles’ law, and Gay-Lussac’s law) at all pressures and temperatures. An ideal gas cannot be liquefied by the application of pressure or by lowering the temperature.

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Expression for Pressure Exerted by a Gas
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पाठ 3: Kinetic Theory of Gases and Radiation - Exercises [पृष्ठ ७३]

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बालभारती Physics [English] Standard 12 Maharashtra State Board
पाठ 3 Kinetic Theory of Gases and Radiation
Exercises | Q 2.4 (a) | पृष्ठ ७३

संबंधित प्रश्‍न

Find the kinetic energy of 3 litre of gas at S.T.P given standard pressure is 1.013 × 105 N/m2


Determine the pressure of nitrogen at 0°C if the density of nitrogen at N.T.P. is 1.25 kg/m3 and R.M.S. speed of the molecules at N.T.P. is 489 m/s.  


A sample of an ideal gas is at equilibrium. Which of the following quantity is zero?


Two identically sized rooms A and B are connected by an open door. If the room A is air-conditioned such that its temperature is 4°C lesser than room B, which room has more air in it?


If the internal energy of an ideal gas U and volume V are doubled then the pressure ____________.


The ratio γ = `"C"_"p"/"C"_"v"` for a gas mixture consisting of 8 g of helium and 16 g of oxygen is ____________.


Which of the following shows the correct relationship between the pressure and density of an ideal gas at constant temperature?


The following graph represents the pressure versus number density for an ideal gas at two different temperatures T1 and T2. The graph implies


What is the microscopic origin of pressure?


A gas is at temperature 80°C and pressure 5 × 10−10 Nm−2. What is the number of molecules per m3 if Boltzmann’s constant is 1.38 × 10−23 J K−1


If 1020 oxygen molecules per second strike 4 cm2 of wall at an angle of 30° with the normal when moving at a speed of 2 × 103 ms−1, find the pressure exerted on the wall. (mass of one oxygen atom = 2.67 × 10−26 kg)


Estimate the total number of air molecules in a room of a capacity of 25 m3 at a temperature of 27°C.


According to the assumptions made in the kinetic theory of gases, when two molecules of a gas collide with each other, then ______.


Derive an expression for the pressure exerted by a gas on the basis of the kinetic theory of gases.


Does an ideal gas exist in practice?


The kinetic energy per molecule of a gas at temperature T is ______.


Temperature remaining constant, if you double the number of molecules in a box, the pressure will ______.


The velocities of five molecules are 2 m/s, 3 m/s, 4 m/s, 5 m/s and 6 m/s. Find the root mean square velocity of molecules.


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