Q. A gaseous mixture was prepared by taking equal mole of CO and N₂. If the total pressure of the mixture was found 1 atmosphere, the partial pressure of the nitrogen (N₂) in the mixture is
A) 1 atm
B) 0.5 atm
C) 0.8 atm
D) 0.9 atm
Explanation
[Solution from source] By Dalton's law, partial pressure = mole fraction × total pressure. Equal moles of CO and N₂ make the mole fraction of N₂ 0.5, so p(N₂) = 0.5 × 1 = 0.5 atm. Their equal molar masses do not change this. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.