What would be the final pressure of O2 in the following experiment? A collapsed polyethylene bag of 30 l capacity is partially blown up by the addition of 10 l of N2 at 0.9 atm at 298 K. Subsequently,

Question

What would be the final pressure of O2 in the following experiment? A collapsed polyethylene bag of 30 l capacity is partially blown up by the addition of 10 l of N2 at 0.9 atm at 298 K. Subsequently, enough O2 is pumped into the bag so that at 298 K and external pressure of 1.1 atm, the bag contains full 30L. If the answer is x atm, then the value of 10x is

TestHub · Accepted Answer

The flexible bag equilibrates with external pressure, so final total pressure inside = 1.1 atm at 298 K in 30 L.

N2 partial pressure after expansion from 10 L to 30 L: P(N2) = 0.9 × 10/30 = 0.3 atm.

P(O2) = 1.1 - 0.3 = 0.8 atm = x.

10x = 8.

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