What happens when chlorine reacts with ozone?
What happens when chlorine reacts with ozone?
When chlorine and bromine atoms come into contact with ozone in the stratosphere, they destroy ozone molecules. One chlorine atom can destroy over 100,000 ozone molecules before it is removed from the stratosphere. Ozone can be destroyed more quickly than it is naturally created.
How do CFCs react with ozone?
CFCs do not easily react with other substances. In fact, they break up only through sunlight, which divides their molecules, causing the release of chlorine (Cl). Once the chlorine is released, it is able to react with ozone (O3), to form chlorine monoxide (ClO) and oxygen (O2).
How do chlorine and bromine react with ozone?
Reactive gases containing chlorine and bromine destroy stratospheric ozone in “catalytic” cycles made up of two or more separate reactions. As a result, a single chlorine or bromine atom can destroy many hundreds of ozone molecules before it reacts with another gas, breaking the cycle.
What type of reaction produces O3?
Ozone is formed when heat and sunlight cause chemical reactions between oxides of nitrogen (NOX ) and Volatile Organic Compounds (VOC), which are also known as Hydrocarbons. This reaction can occur both near the ground and high in the atmosphere.
Does pool chlorine destroy ozone?
Chlorine from swimming pools, industrial plants, sea salt, and volcanoes does not reach the stratosphere. Chlorine compounds from these sources readily combine with water and repeated measurements show that they rain out of the troposphere very quickly. One chlorine atom can destroy over 100,000 ozone molecules.
Does pool chlorine damage ozone?
The release of chlorofluorocarbons into the atmosphere damages this ozone layer. This occurs because chlorine – a component of CFCs – is highly reactive and interacts with the ozone to turn it into ordinary oxygen molecules which do not block the harmful ultraviolet radiation.
What is O3?
Ozone (O3) is a highly reactive gas composed of three oxygen atoms. It is both a natural and a man-made product that occurs in the Earth’s upper atmosphere. (the stratosphere) and lower atmosphere (the troposphere). Depending on where it is in the atmosphere, ozone affects life on Earth in either good or bad ways.
What does ozone react with?
The production of stratospheric ozone is balanced by its destruction in chemical reactions. Ozone reacts continu- ally with sunlight and a wide variety of natural and human- produced chemicals in the stratosphere. In each reaction, an ozone molecule is lost and other chemical compounds are produced.
Does ozone react with chlorine in water?
Ozone reacts with free aqueous chlorine when present as hypochlorite ion (OCl−) with a second order rate constant of 120 ± 15 M−1 s−1 at 20°C. About 77% of the chlorine reacts to produce Cl− and 23% is oxidized to ClO−3. No ClO−4 is formed. Rate data for other chloramines are also presented.
What two reactions describe the catalytic destruction of ozone by chlorine?
The cycle is made up of two basic reactions: Cl + O3 and ClO + O. The net result of Cycle 1 is to convert one ozone molecule and one oxygen atom into two oxygen molecules. In each cycle, chlorine acts as a catalyst because ClO and Cl react and are re-formed.
How is O3 formed?
Stratospheric ozone is formed naturally through the interaction of solar ultraviolet (UV) radiation with molecular oxygen (O2). The “ozone layer,” approximately 6 through 30 miles above the Earth’s surface, reduces the amount of harmful UV radiation reaching the Earth’s surface.
How do you make O3?
Ozone (O3) is created when diatomic oxygen (O2) is exposed to an electrical field or ultraviolet (UV) light. Exposure to these high levels of energy causes a portion of the diatomic oxygen molecules to split into individual oxygen atoms. These free oxygen atoms combine with diatomic oxygen molecules to form ozone.
Is there a three body mechanism for ClO 3?
Stratospheric implications are discussed briefly including the possibility of a concurrent three-body mechanism with O 2 forming ClO 3.
How is the bimolecular rate constant for CL + O3 measured?
The bimolecular rate constant for the reaction Cl + O 3 → ClO + O 2 is measured over the temperature range 210 to 360 K in a discharge flow system using Cl atom resonance fluorescence at 134.72 nm to monitor the decay of Cl under pseudo first order conditions.
How does the destruction of O3 molecules occur?
In 1970 Dr. P. Crutzen proposed the following catalytic reaction that results in the destruction of O3. In this sequence of reactions, X is an atom or molecule that acts as a catalyst to convert O3 to O2. Note that X does not change in the net reaction and so it can continue to destroy O3 molecules.
What is the net reaction of X to O2?
O + XO => X + O2 Net Reaction: 2 O3 + UV => 3 O2 In this sequence of reactions, X is an atom or molecule that acts as a catalyst to convert O3 to O2. Note that X does not change in the net reaction and so it can continue to destroy O3 molecules.
