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In Van der Waal’s equation of state for a non-ideal gas, the term that accounts for intermolecular forces is
The value of Van der Waal’s constant ‘a’ for the gases O2, N2, NH3 and CH4 are 1.360, 1.390, 4.170 and 2.253L2 atm mol–2 respectively. The gas which can most easily be liquified is
The term that corrects for the attractive forces present in a real gas in the van der Waals’ equation is
For one mole of a vander Waals’ gas when b = 0 and T = 300 K, the PV vs. 1/V plot is shown below. The value of the van der Waals’ constant a (atm L mol–2)
In van der Waals equation of state of the gas law, the constant ‘b’ is a measure of
The units of the van der Waal’s constant ‘b’ are
The units of the van der Waal’s constant ‘a’ are
Van der Waals constants ‘a’ and ‘b’ are related with..... respectively.
a and b are van der Waals constants for gases. Chlorine is more easily liquefied than ethane because
A gas will approach ideal behaviour at
In case of hydrogen and helium, the van der Waal’s forces are
Two separate bulbs contain ideal gases A and B. The density of gas A is twice that of gas B. The molecular mass of A is half that of gas B. The two gases are at the same temperature. The ratio of the pressure of A to …
The ratio of the root mean square velocity to average velocity of a gas molecule at a particular temperature is
Which of the following gases would have the highest R.M.S. velocity at 25ºC ?
According to kinetic theory of gases, the root mean square velocity is directly proportional to
The temperature of the gas is raised from 27ºC to 927ºC, the root mean square velocity is (a) 927 / 27 times the earlier value
The root mean square speeds at STP for the gases H2, N2, O2 and HBr are in the order :
The ratio among most probable velocity, mean velocity and root mean square velocity is given by
Root mean square velocity of a gas molecule is proportional to
By which factor does the root mean square velocity of a gaseous molecule increases, when the temperature is increase from 273 K to 1092 K.
The rms speed of N2 Molecules in a gas sample can be changed by
Which is not true in case of an ideal gas ?
Helium atom is two times heavier than a hydrogen molecule .At 298 K, the average kinetic energy of a helium atom is
According to kinetic theory of gases, for a diatomic molecule
At 25oC temperature and 730 mm pressure, 380 mL of dry oxygen was collected. If the temperature is held constant, what volume will be oxygen occupy at 760 mm pressure?