43 gram of hexane and 100g of heptane are mixed to form an ideal solution if Pnot hexane = 100 mm of HG and pnot heptane = 200 mm of HG. find the vapour pressure of solution and mole fraction of X and in vapour phase
The question seems incomplete as X is not mentioned anywhere in the given conditions but to answer generally in such questions you will need to find the mole fraction of both heptane and hexane to get the remaining value of X in the ideal solution.
Then you can find the total pressure by summation of (Xi*Pnot) by substituting the Pnot value of each component.