A mixture of N2 and O2 gases in a cylinder contains 7g of N2 and 8g of O2. If the total pressure of the mixture of the gases in the cylinder is 12bar, then the partial pressure of N2 is:
[Use atomic masses, N=14 u,O=16 u]
A
12bar
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B
6bar
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C
4bar
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D
9bar
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Solution
The correct option is B6bar pN2=(χN2)PTotal=⎛⎜
⎜
⎜⎝728728+832⎞⎟
⎟
⎟⎠×12 =1412×12=6 bar