2.2. Flux and Driving Forces

Try these first

1. 1.

   Define flux in the context of mass transfer.

   Hint

   Think about how much substance flows through an area.

2. 2.

   What does driving force refer to?

   Hint

   Remember, it's often associated with concentration differences.

3. 3.

   What defines flux in mass transfer?

   • A. The speed of fluid
   • B. The rate of transfer of substances
   • C. The chemical concentration
   • D. The temperature of a substance

   Hint

   Think about what's flowing through a surface.

4. 4.

   True or False: The driving force in mass transfer is always a temperature difference.

   • True
   • False

   Hint

   Recall the different forces affecting mass transfer.

5. 5.

   Discuss how varying flow velocities affect the mass transfer coefficient in a chemical engineering process with turbulent flow.

   Hint

   Consider the interplay between velocity, turbulence, and mixing.

6. 6.

   Calculate the flux if the concentration difference is 0.5 mol/m^3, and the resistance is 2.0 m²/s.

   Hint

   Remember the relationship between flux, driving force, and resistance.