Why are carbon tetrachloride and tetrachloride dangerous?

Answer 1

Ozone is a gas in atmosphere that creats in a series of chain reactions. Chlorofluorocarbons can disrupt these chains and one atom of ClF can prevents from forming of 10000 of Ozone molecules. Ozone reject the ultraviolet ray of sun.So these molecules destroy the Ozone layer.

Answer 2

Chlorofluorocarbons, or CFC's, get into the upper atmosphere and wreak havoc with the ozone later. High in our atmosphere, oxygen (O2) gets bombarded by solar radiation to produce ozone (O3). This is fine, because ozone has the unique property of being able to block a lot of this harmful solar radiation from reaching the earth's surface, where it would cause crop failure and famine. When CFC's get up there, the solar radiation breaks the chlorine away from the CFC. The chlorine acts as a catalyst, speeding up the conversion of ozone back into diatomic oxygen (O2). You don't want this, because O2 doesn't block solar radiation like O3 can. This results in much more solar radiation reaching the surface, which is bad! Incidentally, this effect was first observed on the planet Venus. It occured to astronomers that it might actually be happening here too, so we took a close look, and sure enough it was. Yet another life-saving benefit of our space program!

Answer 3

Chlorofluorocarbons are not in themselves dangerous. The problem is that they provide a potent mechanism for transporting chlorine to the stratosphere. CFCs are very stable in the troposphere. They work their way upward from the surface until they are above the ozone layer, and then the UV from the sun breaks them down. The free chlorine can catalyze the destruction of odd oxygen (O3 and O), which causes a reduction in stratospheric ozone.

CFCs also are potent greenhouse gases. CFCs exist in the atmosphere at very low levels, but they absorb at wavelengths that previously were clear. Radiation emitted by the surface at those wavelengths previously escaped; after CFC addition the radiation is more likely to absorbed instead. In contrast, it takes a fairly large addition of carbon dioxide to the atmosphere to have much effect because for the most part the CO2 radiation absorption bands are already saturated.

Answer 4

Carbon Tetrachloride as found in old style fire extinguishers gives off Phosgene gas when it comes into contact with heat (such as a car fire). This Phosgene gas was used during World War One to gas troops on the Western Front

Answer 5

Chlorofluorocarbons are responsible for the depletion of ozone layer. These are compounds which react with ozone to decompose it and thus deplete the layer.