Environmental Protection Agency (EPA) MVAC Certification

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the EPA MVAC Certification Test. Study with flashcards and multiple choice questions, each question comes with hints and explanations. Get ready to ace your exam today!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.


True or False: CFC refrigerants are chemically highly unstable.

  1. True

  2. False

  3. Only when heated

  4. Only in liquid form

The correct answer is: False

CFC refrigerants, or chlorofluorocarbons, are considered chemically stable under normal conditions. This stability is largely due to the strength of the carbon-fluorine bonds in their molecular structure, which makes them resistant to breaking down in the environment. The chemical stability of CFCs is one of the reasons they have been widely used as refrigerants. However, their persistence in the atmosphere has led to significant environmental concerns, particularly regarding ozone depletion. When CFCs eventually rise into the stratosphere, they can be broken down by ultraviolet (UV) radiation, releasing chlorine atoms that contribute to ozone layer depletion. Given this background, the assertion that CFC refrigerants are chemically highly unstable is inaccurate, thereby confirming that the statement is false. This distinction is crucial for understanding the implications of using various refrigerants and their environmental impact, as well as the need for alternatives that are both effective and have lower risks for ozone depletion.