1.

A vessel is filled with a mixture of oxygen and nitrogen . At what ratio of partial pressure will the mass of gases be identical ?

Answer»

<P>`p( O_(2)) = 0.5 p( N_(2))`
`p ( O_(2)) = p ( N_(2))`
`p ( O_(2)) = 1.14 p ( N_(2))`
`p ( O_(2)) = 0.875p ( N_(2))`

Solution :`p(O_(2))= ((m)/( 32))/((m)/(32)+ ( m)/( 28))P`
`p(N_(2)) = ( ( m)/( 28))/( ( m)/( 32)+(m)/(28)) P`
`( p ( O_(2)))/(p(N_(2)))=(28)/( 32)`
or `p( O_(2)) = 0.875p ( N_(2))`


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