Equal weights of methane and hydrogen are mixeed in an empty container at `25^(@)C`. The fraction of total pressure exerted by hydrogen is `:`

Options

A. `1//`8
B. `8 //9`
C. `1//9`
D. `16//17`

Answer

B

Explanation

The fraction of total pressure exerted by hydrogen is equalt o its mole fraction, i.e.,
`((1)/(2)) /((1)/(2) + ( 1)/( 16) ) = (( 1)/( 2))/((9)/( 16)) = ( 1)/(2) xx ( 16)/( 9) = ( 8)/( 9 )`