Calculate the total pressure in a mixture of 8 g of oxygen and 4 g of hydrogen confined in a vessel of 1 dm^(3) at 27^(@)C. R=0.083 bar dm^(3)K^(-1)mol^(-1).

Calculate the total pressure in a mixture of 8 g of oxygen and 4 g of

1.	Calculate the total pressure in a mixture of 8 g of oxygen and 4 g of hydrogen confined in a vessel of 1 dm^(3) at 27^(@)C. R=0.083 bar dm^(3)K^(-1)mol^(-1).
Answer» Solution :MOLAR mass of `O_(2)`=32 g `mol^(-1)"":.8 g O_(2)=(8)/(32)mol=0.25 mol` Molar mass of `H_(2)=2 g mol^(-1)"" :.4 g O_(2)=(4)/(2)=2 mol` `:.` TOTAL number of moles (n)=2+0.25=2.25 V=1 `dm^(3)`, T=`27^(@)C=300 K,R=0.083 BAR dm^(3)K^(-1)mol^(-1)` PV=nRTorP`=(nRT)/(V)=((2.25 mol)(0.083 bar dm^(3)K^(-1)mol^(-1))(300 K))/(1 dm^(3))=56.025 bar`