Environmental Protection Agency (EPA) MVAC Certification

What is the main consequence of the decomposition of CFCs by ultraviolet radiation?

1. The release of ozone

2. The release of chlorine ions

3. The formation of HFCs

4. The creation of particulate matter

The correct answer is: The release of chlorine ions

The main consequence of the decomposition of chlorofluorocarbons (CFCs) by ultraviolet (UV) radiation is the release of chlorine ions. When CFCs ascend into the stratosphere, they are subjected to UV radiation, which breaks them down and releases chlorine atoms. These chlorine atoms are then able to engage in reactions that lead to the destruction of ozone molecules in the ozone layer. This process emphasizes the harmful environmental impact of CFCs, as the depletion of ozone contributes to increased UV radiation reaching the Earth, which can have serious consequences on ecosystems and human health. The other options presented relate to processes that do not directly occur when CFCs decompose. For instance, the release of ozone does not occur; rather, ozone is consumed in the reactions triggered by the released chlorine, countering the notion that ozone increases from CFC breakdown. The formation of hydrofluorocarbons (HFCs) isn't a direct result of CFC decomposition but rather relates to alternative substances developed in response to the impacts of CFCs. Particulate matter generation is unrelated to this specific chemical reaction, as it involves different processes altogether. Thus, the choice that refers to the release of chlorine ions accurately captures the core