Which statement is true about R-12 and R-11?

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Prepare for the SkillCat EPA Type 2 Test with interactive flashcards and multiple-choice questions. Each question is accompanied by hints and explanations. Get ready to pass your exam!

Multiple Choice

Which statement is true about R-12 and R-11?

Explanation:
R-12 and R-11 are chlorofluorocarbons, meaning they are CFCs. Their molecules contain chlorine, fluorine, and carbon, and the chlorine in these compounds releases ozone-depleting chlorine radicals when exposed to sunlight in the atmosphere. That makes them highly destructive to the ozone layer, which is why they were phased out under international agreements. They’re not HCFCs (which include hydrogen and are somewhat less ozone-depleting), not HFCs (which have no chlorine), and not HFOs (a newer class with different chemistry). In short, R-12 and R-11 are CFCs—the ozone-depleting refrigerants from earlier eras.

R-12 and R-11 are chlorofluorocarbons, meaning they are CFCs. Their molecules contain chlorine, fluorine, and carbon, and the chlorine in these compounds releases ozone-depleting chlorine radicals when exposed to sunlight in the atmosphere. That makes them highly destructive to the ozone layer, which is why they were phased out under international agreements. They’re not HCFCs (which include hydrogen and are somewhat less ozone-depleting), not HFCs (which have no chlorine), and not HFOs (a newer class with different chemistry). In short, R-12 and R-11 are CFCs—the ozone-depleting refrigerants from earlier eras.

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