A gas at 50 C with a relative humidity of 100 is cooled to 37 C. ...

[TFauchery]

A gas at 50 C with a relative humidity of 100 is cooled to 37 C. Which of the following will occur? 1. Condensation on surfaces 2. Visible droplet formation 3. Warming of the adjacent air
 
  a. 1, 2, and 3
  b. 1 and 2 only
  c. 1 and 3 only
  d. 2 and 3 only

Question 2

What is the term for the temperature at which the water vapor in a gas begins to condense back into a liquid?
 
  a. Triple point
  b. Critical pressure
  c. Dew point
  d. Boiling point

[carolinefletcherr]

Answer to Question 1

ANS: A
Condensed moisture deposits on any available surface, such as on the walls of a container or de-livery tubing, or even on particles suspended in the gas. Condensation returns heat to and warms the surrounding environment, whereas vaporization of water cools the adjacent air.

Answer to Question 2

ANS: C
The temperature at which condensation begins is called the dew point.