Answer :
A mixture of Ar, He, and O2 has a total pressure of 1,000 kPa (kilopascals). The partial pressure of argon is 150 kPa and helium is 300 kPa. 550 kPa is the partial pressure of oxygen in this mixture.
What is partial pressure?
Each gas that makes up a mixture of gases has a partial pressure, which corresponds to the hypothetical pressure of that gas as if it alone filled the original combination's complete volume with the same temperature.
The thermodynamic activity of a gas's molecules is gauged by its partial pressure. Gases react, disperse, and dissolve based on their partial pressures rather than the concentrations they have in liquids or other gas combinations.
partial pressure (Ar) + partial pressure (He) + partial pressure( O2) = 1000 kpa
150 + 300 + PP(O2) = 1000
PP (O2) = 1000 - 150 - 300 = 550 kPa
Therefore, 550 kPa is the partial pressure of oxygen in this mixture.
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Final answer:
The partial pressure of oxygen in a mixture with a total pressure of 1,000 kPa, where argon and helium have partial pressures of 150 kPa and 300 kPa respectively, is 550 kPa.
Explanation:
The question asks about calculating the partial pressure of oxygen in a mixture of argon (Ar), helium (He), and oxygen (O2) with a total pressure of 1,000 kPa, where argon has a partial pressure of 150 kPa and helium has a partial pressure of 300 kPa. According to Dalton's Law of Partial Pressures, the total pressure of a mixture of gases is equal to the sum of the partial pressures of each individual gas in the mixture. Therefore, the partial pressure of oxygen can be found by subtracting the partial pressures of argon and helium from the total pressure.
Partial Pressure of Oxygen = Total Pressure - Partial Pressure of Ar - Partial Pressure of He
= 1,000 kPa - 150 kPa - 300 kPa
= 550 kPa.
Thus, the partial pressure of oxygen in the mixture is 550 kPa.
