The partial pressure of oxygen in a sample of air is 452mmHg and the total pressure is 780mmHg. What is the mole fraction of oxygen?

Assessment: JAMB UTME - Chemistry - 2000 Subject: Chemistry

Question 1 Report

The partial pressure of oxygen in a sample of air is 452mmHg and the total pressure is 780mmHg. What is the mole fraction of oxygen?
Answer Details
The mole fraction of oxygen can be calculated using the formula: Mole fraction of oxygen = Partial pressure of oxygen / Total pressure Plugging in the given values, we get: Mole fraction of oxygen = 452mmHg / 780mmHg Simplifying this fraction gives us: Mole fraction of oxygen = 0.579 Therefore, the correct option is: 0.579 This means that about 57.9% of the total pressure of the air sample is due to oxygen molecules.
Read lesson note on Kinetic Theory Of Matter And Gas Laws (JAMB)
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