Question

An example of an HFC refrigerant is:
a.) R-12
b.) R-22
c.) R-123
d.) R-134a

Answer 1

R-134a is an example of an HFC refrigerant from the provided options. R-22 and R-123 are HCFCs, and R-12 is a CFC.

Step-by-step explanation:

An example of an HFC refrigerant from the choices provided is R-134a.

Hydrofluorocarbons (HFCs) are considered a replacement for chlorofluorocarbons (CFCs) which have been phased out due to their negative impact on the ozone layer. Notable CFCs like R-12 have been largely replaced by more environmentally friendly HFCs such as R-134a (CF3-CH₂F).

R-22 and R-123 are examples of hydrochlorofluorocarbons (HCFCs), not HFCs. R-22 is also known as HCFC-22 and R-123 as HCFC-123. As per the given choices, R-134a is the HFC refrigerant.