Gaseous State

At very high pressures, the compressibility factor of one mole of a gas is given by :

Initially, the root mean square (rms) velocity of N2 molecules at certain temperature is \(u\). If this temperature is doubled and all the nitrogen molecules dissociate into nitrogen atoms, then the new rms velocity will be :

Two closed bulbs of equal volume \((V)\) containing an ideal gas initially at pressure \({p_i}\) and temperature \({T_1}\) are connected through a narrow tube of negligible volume as shown in the figure below. The temperature of one of the ...

If Z is a compressibility factor, van der Waals equation at low pressure can be written as:

For gaseous state, if most probable speed is denoted by C*, average speed by \(\mathop C\limits^{\_\_}\) and mean square speed by
C, then for a large number of molecules the ratios of these speeds are:

The compressibility factor for a real gas at high pressure is :

'a’ and `b’ are van der Waals’ constants for gases. Chlorine is more easily liquefied than ethane because

If 10–4 dm3 of water is introduced into a 1.0 dm3 flask to 300 K, how many moles of water are in the vapour phase when equilibrium is established ?
(Given : Vapour pressure of H2O at 300 K is 3170 Pa ; R = 8.314 J K–1 mol–1)

Equal masses of methane and oxygen are mixed in an empty container at 25oC. The fraction of the
total pressure exerted by oxygen is

Which one of the following statements is NOT true about the effect of an increase in
temperature on the distribution of molecular speeds in a gas?

In Van der Waals equation of state of the gas law, the constant ‘b’ is a measure of

As the temperature is raised from 20°C to 40°C, the average kinetic energy of neon atoms
changes by a factor of which of the following?

According to the kinetic theory of gases, in an ideal gas, between two successive collisions of a gas molecule travels

Value of gas constant R is

Kinetic theory of gases proves

For an ideal gas, number of moles per litre in terms of its pressure P, gas constant R and temperature T is