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A gas is said to behave like an ideal gas when the relation PV/T = constant. When do you expect a real gas to behave like an ideal gas ?
The pressure of real gases is less than that of ideal gas because of
For a gas deviation from ideal behaviour is maximum at :
Any gas shows maximum deviation from ideal gas at
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 …
In case of hydrogen and helium, the van der Waal’s forces are
A gas will approach ideal behaviour at
a and b are van der Waals constants for gases. Chlorine is more easily liquefied than ethane because
Van der Waals constants ‘a’ and ‘b’ are related with..... respectively.
The units of the van der Waal’s constant ‘a’ are
The units of the van der Waal’s constant ‘b’ are
In van der Waals equation of state of the gas law, the constant ‘b’ is a measure of
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)
The term that corrects for the attractive forces present in a real gas in the van der Waals’ equation 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
In Van der Waal’s equation of state for a non-ideal gas, the term that accounts for intermolecular forces is
The compressibility factor (Z) is defined as (a) real ideal V V (b) P Z nRT (c) ideal real V V (d) nRT Z PV
Dominance of strong repulsive force among the molecules of the gas (Z = compressibility factor)
At high pressure, all the gases have
The compressibility of a gas is less than unity at STP. Therefore
For H2 gas, the compressibility factor, Z = PV/n RT is:
The compressibility factor of an ideal gas is
Positive deviation from ideal behaviour takes place because of
The compressibility factor (Z) is the ratio of I. PV and nRT II. Actual molar volume of gas to molar volume of it. Choose the correct option.
The compressibility factor for an ideal gas is