Ozone is present in the upper atmosphere and it causes the sky is blue color. At the height of 25 - 30 km ozone is produced by part of the spectrum of solar ultraviolet radiation - exists there in the form of gas at concentration of 10 - 20 ppm (parts permillion). At these concentrations, ozone absorbs ultraviolet radiation, which could threaten life on earth. Near the ground, in the air we breathe, ozone is present in very low concentrations (0.001 - 0.003 ppm) and is formed naturally during storms due to lightning strikes as well as is produced for example by waterfalls or through the raging waves of water.
The chemical properties of ozone in comparison to the oxygen
|Spell||smell after a storm||odorless|
|Solubility in water (0 ℃)||0.64||0.049|
|Electrochemical potential (V)||2.07||1.23|
The half-life of ozone in the air depending on the temperature
|Temperature (℃)||Half-life (air)*|
The half-life of ozone in water depending on the temperature
|Temperature (℃)||Half-life (water)*|
* These values are determined exclusively on the basis of the thermal decomposition of ozone. They do not include moisture, microbial activity and other effects occurring in the environment.