Ozone Depletion Research Paper

Ozone depletion is a man made phenomena which industries release CFC (chlorofluorocarbons), rising up to the upper atmosphere exposing to high energy UV radiation from the Sun. Even though that CFC has low reactivity, flammability and toxicity, it remains inert in the troposphere as they disseminate among the stratosphere whereas the UV rays strikes the CFCs molecules and releases chlorine. The chemical reacts with ozone (O3/oxygen), a natural combination of O2 (oxygen) molecules and free oxygen atoms (O1) splitted by O2, by striking an ozone (O3) it leaves chlorine monoxide and an oxygen molecule, resulting in a loss of oxygen.

This situation brings unfavorable results and consequences on living beings. It may cause human skin cancer and

The chlorine atoms that are replaced by hydrogen atoms causes a higher presence and both are covalent bondings with strong intermolecular forces. The double bondings (Or triple bondings) in hydrocarbon tends to be stronger, but the chemical is flammable. Fluorocarbons are not flammable and are also polar covalent bondings, making them stable to ultraviolet radiation and prevents them from catalysing ozone depletion. Hydrochlorofluorocarbons (HCFCs), one of the alternatives that contains C-Cl bondings have most of its molecules dismantled in the lower atmosphere before reaching the stratospheric ozone layer. Another chemical, Hydrofluorocarbons (HFCs), having no chlorine atoms which does not bring harm to the ozone layer is considered the best alternative since they are not flammable, such as CF3CH2F,1,1,12 tetrafluoroethane. As CFCs are replaced by HFCs, the remaining CFCS will reduce as the ozone recovers

CFC is not reactive and ultraviolet radiation is one of the good ways to separate their molecules. In 1970s scientists first warned the world about the potential dangers of CFC, which it became a contentious issue the decade that follows. During the period, there are a variety of environmental groups that are very enthusiastic promoting forbidden use of the chemical. In the same duration, some chemical industries bared an amount of media pressure and that they have to argue against the situation. This was the first environmental issue that was responded globally. The CFC use in the world reduced from 1,200,000 tonnes to 70,000 tonnes from 1998 to 2004 respectively. It was estimated that 2065 the ozone layer will recover to its original state. Even though there are many positive impacts of hydrofluorocarbon, overexposure to this compound might lead to heart or brain damage. Also, it is a dominant greenhouse gas which contribute to the global warming and climate change, the ability to trap thousands of times more heat than carbon dioxide. HFCs are categorized as a more long-term supersession than HCFCs, and have an ozone depleting potential of zero as they contain no chlorine and they are nonflammable.

What negative effects will this factor have on your