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Question

Total pressure of a gaseous mixture containing 28 g N2 and 16 g O2 in a cylinder of volume 8.21 L at 300 K is:
[Given: R=0.0821 L atm mol1K1]

A
3.5 atm
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B
2.5 atm
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C
4.5 atm
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D
5.5 atm
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Solution

The correct option is C 4.5 atm
P=nRTV=(2828+1632)×0.0821×3008.21=4.5 atm

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