Contents
How is ozone formed in the stratosphere quizlet?
Ozone is formed in the stratosphere by the reaction of ultraviolet radiation striking an oxygen molecule. This results in the oxygen molecule splitting apart and forming atomic oxygen (O2 + hv = O + O). Atomic oxygen can now react with molecular oxygen to form ozone (O+O2 = O3).
How is ozone produced in stratosphere Class 11?
Ozone in stratosphere is a product of action of UV radiations on dioxygen ({{O}_{2}}) molecules. The UV radiations split apart molecular oxygen into free oxygen atoms. These oxygen atoms combine with the molecular oxygen to form ozone.
How is ozone manufactured?
Ozone is produced from electrical discharge like a spark. When an electrical discharge occurs near the oxygen molecule (O2) found in ambient air it will split this molecule into elemental oxygen (O). These Oxygen atoms will quickly bind to another oxygen molecule (O2) to form ozone (O3).
What percentage of ozone is contained in the stratosphere?
Ozone location. Most ozone (about 90%) is found in the stratosphere, which begins about 10–16 kilometers (6–10 miles) above Earth’s surface and extends up to about 50 kilo- meters (31 miles) altitude.
What is ozone and why is ozone important to life on Earth?
Why is Ozone Layer important? Ozone protects the Earth from harmful ultraviolet (UV) rays from the Sun. Without the Ozone layer in the atmosphere, life on Earth would be very difficult. Plants cannot live and grow in heavy ultraviolet radiation, nor can the planktons that serve as food for most of the ocean life.
How is ozone destroyed?
Ozone Depletion. 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. When they break down, they release chlorine or bromine atoms, which then deplete ozone.
Is the ozone layer?
The ozone layer is the common term for the high concentration of ozone that is found in the stratosphere around 15–30km above the earth’s surface. It covers the entire planet and protects life on earth by absorbing harmful ultraviolet-B (UV-B) radiation from the sun.
What percentage of ozone is contained in the stratosphere A 10% B 50%?
About 90% of the ozone in our atmosphere is contained in the stratosphere, the region from about 10 to 50-km (32,000 to 164,000 feet) above Earth’s surface. Ten percent of the ozone is contained in the troposphere, the lowest part of our atmosphere where all of our weather takes place (see Chapter 2).
How is ozone formed in the stratosphere?
Ozone is naturally produced in the stratosphere in a two-step process. In the first step, ultraviolet sunlight breaks apart an oxygen molecule to form two separate oxygen atoms. In the second step, each atom then undergoes a binding collision with another oxygen molecule to form an ozone molecule.
How does ozone break up into O2 and O3?
Atomic oxygen is very reactive, so much so that when it encounters an O2 molecule, it can actually break into the stable molecule and form O3, ozone. However, ozone can also absorb UV radiation with enough energy to break the bond, resulting in an O2 molecule and one free oxygen atom.
How are free oxygen atoms recombine to form ozone?
Free oxygen atoms can recombine to form oxygen molecules but if a free oxygen atom collides with an oxygen molecule, it joins up, forming ozone. Ozone molecules can also be decomposed by ultraviolet radiation into a free atom and an oxygen molecule.
Where does the smell of ozone come from?
Using UV lights tuned specifically for a wavelength of 185 nm ozone can be produced from air. Ozone is produced from electrical discharge like a spark. This is why you may smell ozone near electric motors, electric generators, and copy/print machines.