Question

What will be the pressure exerted by a mixture of `3.2 g` of methane and `4.4 g` of methane and `4.4g` of carbon dixide contained in a `9 dm^(3)` flask at `27^(@)C` ? .

Answer 1

`PV =nRT`
`n =n_(CH_4) + n_(CO_2) = (3.2)/(16) + (4.4)/(44) =0.3`
`V =9dm^(3) =9litre`
`:. P xx 9 = 0.3 xx 0.082 xx 300`
`:. P =0.82 atm = 0.82 xx 1.013xx 10^(5) Pa`
`= 8.31 xx 10^(4) Pa` .