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) C) Helium gas (D) D) Phosgene gas

CFC (chlorofluorocarbon) and HCFC (hydrochlorofluorocarbon) refrigerants can decompose at high temperatures, such as around open flames or glowing metal surfaces, producing toxic byproducts. One of the most concerning gases that can form is phosgene gas, a highly toxic compound that can cause severe respiratory issues upon inhalation. This serves as a reminder of the importance of handling these refrigerants safely and responsibly. Understanding the environmental impacts of refrigerants is crucial, particularly when it comes to global warming and ozone depletion. Both CFCs and HCFCs have been phased out or are heavily regulated in many countries due to their harmful effects. Alternatives such as HFCs (hydrofluorocarbons) and natural refrigerants are being explored to reduce environmental risks while still providing effective cooling solutions.