On a smoggy day in a certain city. the ozone concentration was 0.42 ppm by volume. Calculate the partial pressure of ozone (in atm) and the number of ozone molecules per liter of air if the temperature and pressure were
Interpretation:
The partial pressure of ozone and the number of ozone molecules per liter of air at temperature 20°C and at pressure 748 mmHg are to becalculated.
Concept introduction:
The Ideal Gas Law has the volume (V) occupied by n moles of any gas also has a pressure (P) at temperature (T) in Kelvin and this ideal gas equation is represented as follows:
Here,
Molal fraction is defined as the amount of a constituentdivided by the total amount of all constituents in a mixture.
Ozone is a molecule made up of three oxygen atoms. Ozone is called a secondary pollutant, which is formed from the primary pollutants like nitrogen oxide.
Answer to Problem 53QP
Solution: The partial pressure of
Explanation of Solution
The number of moles of gas is directly proportional to the volume of the gas. Thus,
Substitute the values in the above equation:
Therefore, the mole fraction of
The partial pressure of
Here,
Substitute the values in the above equation:
Therefore, the partial pressure of
The moles of ozone can be calculated by ideal gas equation as follows:
Here,
Substitute the values of
Therefore, the moles of ozone are
The number of ozone molecules per liter is calculated as follows:
The partial pressure of ozone is
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Chapter 21 Solutions
EBK CHEMISTRY
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