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At 298K 10 litres of N, at 0.96 alm is a...

At 298K 10 litres of N, at 0.96 alm is added to 32 litres of an evacuvated polythene bag, Subsequently enough `O_2` is pumped into the bag at 298K. Now if the total pressure is 0.990 atm, partial pressure of `O_2`

A

0.69 atm

B

0.32 atm

C

0.495 atm

D

0.5 atm

Text Solution

Verified by Experts

The correct Answer is:
A
`P_(N_2)` in `32` lit bag : `P_1V_1 = P_2V_2`
`implies P_2 = (10 xx 0.96)/(32) = 0.3`
Final pressure = `0.99 ` atm.
`implies P_(O_2) = 0.99 - 0.3 = 0.69 atm`.
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