Which substance is known for being insoluble in water related to refrigerants?

• A. Carbon dioxide in CFC's
• B. Chlorine in CFC's and HCFC's
• C. Ammonia in refrigerants
• D. Methane in refrigerants

Answer: (B)

The substance identified as being insoluble in water related to refrigerants is chlorine, particularly in the context of CFCs (chlorofluorocarbons) and HCFCs (hydrochlorofluorocarbons). Chlorine is a heavy, non-polar molecule that does not ionize in water, meaning it does not dissolve well in aqueous environments. This characteristic is important when considering the environmental impact and behavior of refrigerants because chlorine is a significant element that contributes to ozone depletion when released into the atmosphere from these compounds.

Understanding the solubility of various substances is essential in handling refrigerants safely and responsibly. Chlorofluorocarbons and hydrochlorofluorocarbons were widely used in refrigeration and air conditioning but posed risks to the ozone layer due to the release of chlorine upon breakdown. This knowledge helps inform regulations and practices aimed at reducing harm to the environment when using these refrigerants.

The other substances mentioned do not carry the same implications regarding water solubility in the context of refrigerants. For instance, carbon dioxide, ammonia, and methane exhibit different solubility behaviors, each with distinct environmental and safety considerations.