An ideal gas 'X' has same density at 1 bar pressure as that of dinitrogen at 2 bar at 298 K. What is the molar mass of the gas 'X'?

Answer

56

Explanation

`d=(PM)/(RT)`
`d_(N_2)=(2xx28)/(R xx298)`
Let the molar mass of gas be x
`d_("gas") = (1xx "x")/(Rxx298)`
`d_("gas") = dN_2`
`(1xx"x")/(R xx 298)= (2 xx 28)/(R xx 298)`
`:. x = 56 " g mol"^(-1)`