Chemical Engineering - MCQ Practice Questions

A system absorbs 500 J of heat and does 200 J of work on surroundings. The change in internal energy is:

At constant temperature and pressure, which of the following represents the Gibbs free energy change for a spontaneous process?

The Clausius-Clapeyron equation relates vapor pressure to temperature. Which statement is correct?

For an ideal gas undergoing adiabatic compression, the entropy change is:

In a constant pressure process, the heat absorbed by a system equals:

For a binary ideal solution, the total vapor pressure at constant T is given by:

During a constant volume process, the first law of thermodynamics simplifies to:

A gas undergoes an isothermal expansion from 2 L to 5 L at 298 K. If the process is reversible, what is the sign of entropy change for an ideal gas?

In the van der Waals equation, the term 'a' represents:

What is the Clausius-Clapeyron equation used for?

For a system at equilibrium, the chemical potential of a substance in different phases must be:

What does the Gibbs free energy criterion ΔG < 0 indicate for a process?

A system absorbs 500 J of heat and does 300 J of work. The change in internal energy is: