Enthalpy changes over a constant pressure path are always zero for ______________ gas?

Related Mcqs:

1m3 of an ideal gas at 500 K and 1000 kPa expands reversibly to 5 times its initial volume in an insulated container. If the specific heat capacity (at constant pressure) of the gas is 21 J/mole . K, the final temperature will be ?

A. 35 K B. 174 K C. 274 K D. 154 K...

The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x1. x2, where A is a constant. The corresponding equation for ln y1, where y1 is the activity co-efficient of component 1, is__________________?

A. A . x22 B. Ax1 C. Ax2 D. Ax12...

Critical temperature is defined as the temperature above which a gas will____________________?

A. Not liquify (barring exceptions) B. Immediately liquify C. Never liquify however high the pressure may be D. None of these...

Which of the following is not an extensive property ?

A. Free energy B. Entropy C. Refractive index D. None of these...

The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is__________________?

A. Less B. More C. Same D. Dependent on climatic conditions...