3.6. Evaporation of Volatile Chemical Spills

Try these first

1. 1.

   What does the Sherwood number represent?

   Hint

   Think about the different ways substances transfer in fluids.

2. 2.

   Define Reynolds number.

   Hint

   It compares inertial forces to viscous forces.

3. 3.

   What is the Sherwood number a measure of?

   • Convection vs. diffusion in mass transfer
   • Temperature effects
   • Viscous forces

   Hint

   Think about how substances move in different states.

4. 4.

   True or False: Higher Reynolds numbers indicate laminar flow.

   • True
   • False

   Hint

   Recall what you learned about fluid dynamics.

5. 5.

   A chemical spill occurs in a river with a Reynolds number of 2000. Explain how this affects the mass transfer of the contaminant and the rate of evaporation for both heavy and light hydrocarbons.

   Hint

   Consider how flow types (laminar vs. turbulent) affect chemical behavior.

6. 6.

   Given specific empirical correlations for water bodies, derive the implications if the Schmidt number for a chemical increases significantly due to altered temperature profiles.

   Hint

   Think about how changes in temperature can influence diffusion rates.