Calculate the partial pressure exerted by dioxygen from a mixture of 32 ~g O ₂, 80 ~g Ar (mol.mass 40) and 4 g dihydrogen( P _ total =10 bar ).

Step-by-step solution

aligned & n _ O ₂ = 32 32 =1 ~mol & n _ Ar = 80 40 =2 ~mol ; n _ H ₂ = 4 2 =2 ~mol & x_ O ₂ = n _ O ₂ n _ Total = 1 1+2+2 = 1 5 =0.2 & P _ O ₂ =x_ O ₂ P _ Total =0.2 10=2 bar aligned