States Of Matter Mock Tests

At constant temperature, if the pressure of a gas is doubled, its volume becomes:

Which of the following liquids will have the highest vapour pressure at room temperature?

Two identical containers A and B with rigid walls contain 2 moles of O2 and 4 moles of He respectively at the same temperature. If the rms speed of O2 molecules is v, what is the rms speed of He atoms?

The van der Waals constants for NH3, CO2, O2, and N2 are: NH3(a=4.17, b=0.0371), CO2(a=3.59, b=0.0427), O2(a=1.36, b=0.0318), N2(a=1.39, b=0.0391). Which gas has the highest critical temperature?

At high pressure, the compressibility factor Z = PV/nRT for a real gas described by the van der Waals equation (neglecting 'a') is:

At high pressure, the compressibility factor Z of a real gas is approximately given by (where B is the second virial coefficient related to intermolecular attractions):

One mole of an ideal gas at 27°C expands isothermally from 2 L to 20 L against a constant external pressure of 1 atm. The work done by the gas is: (1 L·atm = 101.3 J)

What is the root mean square speed of O₂ molecules at 27°C? (R = 8.314 J mol⁻¹ K⁻¹, M = 32 × 10⁻³ kg mol⁻¹)___SEQ___21