What gases can CFC and HCFC refrigerants decompose into at high temperatures, (e.g., open flames, glowing metal surfaces, etc.)? (A) A) Tetraethyl gas (B) B) Hydrazine gas (C) O Helium gas (D) D) Phosgene gas

CFCs (Chlorofluorocarbons) and HCFCs (Hydrochlorofluorocarbons) can decompose at high temperatures into several hazardous compounds, one of which is phosgene gas. Phosgene is a highly toxic gas that can cause serious health effects if inhaled, including respiratory distress and potentially death, making it particularly concerning in environments where these refrigerants are exposed to extreme heat. Additionally, the decomposition of these refrigerants not only produces harmful gases like phosgene but can also lead to the creation of hydrochloric acid. This compound can pose significant risks to both health and the environment, especially if it comes into contact with moisture and leads to corrosive damage. Therefore, handling CFCs and HCFCs with care is essential, especially when working in situations where high temperatures are a factor.