Which of the following compounds is classified as a CFC (chlorofluorocarbon)?

• A. CFCl3
• B. C2H2F4
• C. CHF2Cl
• D. CF3Br

Answer: (A)

Verified step by step guidance

1. Understand what a CFC (chlorofluorocarbon) is: a compound composed only of carbon (C), chlorine (Cl), and fluorine (F) atoms, with no other elements present.
2. Examine each compound to identify its elements:
3. - \(\mathrm{C_2H_2F_4}\) contains carbon, hydrogen, and fluorine, so it is not a CFC because it has hydrogen.
4. - \(\mathrm{CHF_2Cl}\) contains carbon, hydrogen, fluorine, and chlorine, so it is not a pure CFC due to the presence of hydrogen.
5. - \(\mathrm{CF_3Br}\) contains carbon, fluorine, and bromine, so it is not a CFC because bromine is not part of the CFC definition.
6. - \(\mathrm{CFCl_3}\) contains only carbon, fluorine, and chlorine, fitting the definition of a CFC.