1.1. Introduction to Interphase Mass Transfer

Try these first

1. 1.

   What is mass transfer?

   Hint

   Think of how sugar dissolves in water.

2. 2.

   Define diffusion.

   Hint

   It’s how a smell spreads in a room.

3. 3.

   What is diffusion?

   • Movement against concentration gradient
   • Movement from low to high concentration
   • Movement from high to low concentration

   Hint

   Think about how a drop of food coloring disperses in water.

4. 4.

   True or False: Interphase mass transfer only occurs in liquids.

   • True
   • False

   Hint

   Consider how gases interact with liquids.

5. 5.

   A pollutant is released into a lake with a surface area of 2000 m² and a diffusion coefficient of 0.05 m²/s. Calculate the expected flux across a concentration gradient of 5 mg/L.

   Hint

   Pay attention to the units when performing calculations.

6. 6.

   Discuss how the different densities of oil and water affect the rate of environmental pollution during an oil spill. Provide examples.

   Hint

   Consider how this affects marine life and water quality.