Entropy (Part 3/4)

The video tutorial covers the calculation of entropy changes in thermodynamic systems, focusing on isochoric, isobaric, and isothermal processes. It explains how to use the first law of thermodynamics and Maxwell relations to derive necessary equations. The tutorial emphasizes the importance of reversible processes in calculating entropy and provides step-by-step examples for each type of process.

What is the primary method to derive thermodynamic equations if you forget them during an exam?

• Applying Maxwell relations and total differentials

• Using a calculator

• Memorizing all equations

• Using the first law of thermodynamics

In an isochoric process, what is the expression for the differential heat (dQ)?

• NRT dV

• NCV dT

• NR dV

• NCP dT

When calculating entropy change for an isochoric process, which variable is integrated over?

• Temperature

• Entropy

• Volume

• Pressure

For an isobaric process, what is the expression for the differential heat (dQ)?

• NRT dV

• NR dV

• NCV dT

• NCP dT

In an isobaric process, what happens to the pressure during the calculation of entropy change?

• It increases

• It fluctuates

• It decreases

• It remains constant

For an isothermal process, what is the relationship between heat and volume?

• Heat is directly proportional to volume

• Heat is inversely proportional to volume

• Heat is independent of volume

• Heat is equal to volume

What is the expression for entropy change in an isothermal process?

• NRT ln(P2/P1)

• NCV ln(V2/V1)

• NCP ln(T2/T1)

• NR ln(V2/V1)