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Partial pressure calculatoris very useful tool for evaluatingPartial pressure of individual gases in a mixture of gases in a container. This tool uses Dalton’s Partial pressure Law and formulas. It states total pressure is the sum of individual pressure of each gas in the mixture. The partial pressure of each gas is the mole fraction of the total pressure.
Example 1:-
Find the Partial pressureof hydrogen(1.01g) and chlorine(17.73g) in its mixture having total
pressure 98.8kPa:-
Solution 1:- Moles of Hydrogen = 1.02/2.02 = 0.500 mol
Moles of Chlorine gas = 17.73/70.90 = 0.250 mol
Partial pressure of H2 = 0.500/0.750 x 98.8 = 65.9 kPa
Partial pressure of Cl2 = 0.250/0.750 x 98.8 = 32.9 kPa
Answer : Hydrogen gas = 65.9 kPa and Chlorine gas = 32.9 kPa
Example 2:-
Find the Partial pressureof hydrogen(4.04g) and oxygen(32.0g) in its mixture having total
Partial pressure of H2 = 2.0 / 3.0 x 0.906 = 0.667 kPa
Partial pressure of O2 = 1.0 / 3.0 x 0.906 = 0.302 kPa
Answer : Hydrogen gas = 0.667 kPa and Oxygen gas = 0.302 kPa
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