The activity of an ideal gas is numerically ____________ its pressure?

Related Mcqs:

One mole of nitrogen at 8 bar and 600 K is contained in a piston-cylinder arrangement. It is brought to 1 bar isothermally against a resisting pressure of 1 bar. The work done (in Joules) by the gas is_________________?

A. 30554 B. 10373 C. 4988.4 D. 4364.9...

The expression for entropy change given by, ΔS = nR ln (V2/V1) + nCv ln (T2/T1) is valid for ______________________?

A. Reversible isothermal volume change B. Heating of a substance C. Cooling of a substance D. Simultaneous heating and expansion of an ideal gas...

Solid and liquid phases of a substance are in equilibrium at the____________________?

A. Critical temperature B. Melting point C. Freezing point D. Both B. and C...

In the equation PVn = constant, if the value of n = y = Cp/Cv, then it represents a reversible ______________ process?

A. Isothermal B. Adiabatic C. Isentropic D. Polytropic...

When a system is in equilibrium for all possible processes, the differential or finite change of entropy is__________________?

A. < 0 B. > 0 C. = 0 D. None of these...