Methanol and ethanol froms nearly ideal solution at 300 K. A solution is made by mixing 32g methanol and 23 g ethanol. Calculate the partial pressure of its constituents and the total pressure of the solution. (at 300 K , `p_((CH_(3)OH))^(@) = 90` mm Hg, `p_((C_(2)H_(5)OH))^(@) = 51` mm Hg).

Answer

`p_(CH_(3)OH)=60mm, p_(C_(2)H_(5)OH)=17mm; "Total = 77mm"`

Explanation

`n_(CH_(3)OH)=32//32 = "1 mol, "n_(C_(2)H_(5)OH)=23//46="0.5 mol."`