1.6. Evaporation of Pollutant from a Lake

Try these first

1. 1.

   What is the definition of evaporation?

   Hint

   Think about how puddles disappear on a hot day.

2. 2.

   What is a mass balance?

   Hint

   It involves calculating how much of something goes in and how much comes out.

3. 3.

   What process describes the transfer of pollutants from liquid to gas?

   • Evaporation
   • Condensation
   • Sublimation

   Hint

   Consider what happens when puddles dry.

4. 4.

   True or False: Mass transfer coefficients can be neglected in the pollutant evaporation process.

   • True
   • False

   Hint

   Think about how substances mix.

5. 5.

   A lake contains a pollutant at an initial concentration of 10 mg/L. If 15% of this concentration evaporates in the first week, what will be the new concentration?

   Hint

   Calculate 15% of the initial concentration and subtract from it.

6. 6.

   If the evaporation rate increases due to rising temperatures, how would you model the kinetic energy factor's effect on pollutant concentration in a lake?

   Hint

   Consider the direct relationships between temperature, evaporation, and concentration levels.