5. Conclusion

Try these first

1. 1.

   What does the mass transfer coefficient indicate?

   Hint

   Think about what flows between phases.

2. 2.

   Name one factor that affects the mass transfer coefficient.

   Hint

   Refer to the acronym you learned - FLOW.

3. 3.

   What is the overall mass transfer coefficient?

   • A) A measure of fluid density
   • B) A value indicating mass transfer efficiency
   • C) A type of pressure gradient

   Hint

   It relates to how substances exchange across surfaces.

4. 4.

   True or False: The resistance model indicates total resistance is just the resistance of the gas phase.

   • True
   • False

   Hint

   Think of a layered cake model.

5. 5.

   Calculate the mass transfer flux given a known mass transfer coefficient of 0.005 m/s, a water concentration of 0.1 mol/m³, and air saturation concentration of 0.02 mol/m³.

   Hint

   Remember to follow the relationship involving coefficients and concentrations.

6. 6.

   Describe how changing temperature affects mass transfer coefficients in gaseous systems.

   Hint

   Think about how heating liquids changes their flow and transfer.