A mixture of 0.3 mol of N₂, 0.5 mol of CO₂, and 0.4 mol of O₂ exerts a pressure of 2.4 atm on the walls of the vessel that contains it. What is the pressure exerted by the nitrogen?
A) 0.75 atm
B) 0.6 atm
C) 0.5 atm
D) 0.3 atm
E) 0.8 atm
IMAT 2024 · Question 33
Q33 - Ideal gas laws
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The correct answer is B) 0.6 atm.
Dalton's law: each gas gets the share of the total pressure that matches its share of the moles.
Total moles = 0.3 + 0.5 + 0.4 = 1.2. Nitrogen's share is 0.3/1.2 = 0.25.
0.25 × 2.4 atm = 0.6 atm
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