Pressure of a mixture of 4g of O2 and 2g of H2 confinedin a bulb of 1 litre at 0°C is

No. of moles of O2=432=0.125No. of moles of H2=22=1Total no. of moles =1+0.125=1.125P=nRTV=1.125×0.0821×2731=25.215 atm