How was the ozone layer formed?
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.
How is ozone formed in the troposphere and the stratosphere and how are these processes different?
In the stratosphere, the process begins with an oxygen molecule (O2 ) being broken apart by ultraviolet radiation from the Sun. In the lower atmos phere (troposphere), ozone is formed by a different set of chemical reactions that involve naturally occurring gases and those from pollution sources.
Why ozone is unstable than oxygen?
The ozone formation is endothermic and requires heat. But in case of ozone, there is one more oxygen atom. The third oxygen atom pushes one of its lone pairs of electrons toward one of the double bonded oxygen atoms. Thus, it interrupts the overall structural stability and thus, the molecule becomes unstable.
How does the ozone layer decompose explain?
In the presence of ultraviolet rays, they are broken down to form chlorine radicals. This chlorine radical reacts with ozone to form chlorine monoxide and an oxygen molecule. This reaction breaks down the ozone.
When did ozone layer formed?
Around 600 million years ago
Around 600 million years ago, a thin ozone layer formed that was capable of protecting life from harmful wavelengths of UV radiation (wavelengths between 200-300 nm).
Which of the following methods is used to form ozone from oxygen?
Which of the following methods is used to form ozone from oxygen? Explanation: Standard electric discharge produces sparking when electricity is passed through the tube. However, silent electric discharge is more appropriate because the conversion of ozone to oxygen is endothermic.
How is ozone formed class 10th?
CBSE NCERT Notes Class 10 Biology Our Environment. Ozone is a molecule formed by three atoms of oxygen. The UV radiations split apart some molecular oxygen (O2) into free oxygen (O) atoms which then combine with the molecular oxygen (O2) to form ozone (O3).
Is ozone stable or unstable?
Ozone (O3) is a relatively unstable molecule made up of three atoms of oxygen (O). Although it represents only a tiny fraction of the atmosphere, ozone is crucial for life on Earth. Depending on where ozone resides, it can protect or harm life on Earth.
Why is the ozone more reactive than oxygen gas?
the stronger intermolecular forces in ozone than oxygen. Oxygen has a strong double bond which has more stability than the single co-ordinate bond in ozone, therefore more energy is required to break the O2 bonding than ozone, so the ozone molecule is more reactive than oxygen gas. They are more reactive than ozone.
How is ozone different from oxygen?
Ozone is an alternative version of oxygen. Oxygen or (O2) in the air we breathe is actually two molecules of oxygen attached together. Ozone is three atoms of oxygen attached together forming a molecule that is O3.
How did CFCs destroy the ozone layer?
Once in the atmosphere, CFCs drift slowly upward to the stratosphere, where they are broken up by ultraviolet radiation, releasing chlorine atoms, which are able to destroy ozone molecules. When sunlight returns in the spring, the chlorine begins to destroy ozone.