What is the boiling temperature of R-22 (Freon 22) at atmospheric conditions?

The boiling temperature of R-22, also known as Freon 22, at atmospheric pressure is approximately -40.8°C (-41.44°F). This means that at sea level, R-22 will change from a liquid to a gas at this specific temperature.

R-22 is a refrigerant commonly used in air conditioning and refrigeration systems. Its low boiling point allows it to absorb heat effectively from the environment, thus facilitating the cooling process in these systems. Understanding the boiling point of refrigerants is crucial for designing and operating refrigeration and air conditioning systems, as it directly affects system efficiency and performance.

The other options do not correspond with the known boiling point of R-22. For instance, 0°C (32°F) and the other temperatures listed are significantly higher than the actual boiling point, indicating that R-22 would be in a gaseous state at those temperatures under atmospheric conditions, not transitioning from liquid to gas.