1.

Mole fraction of benzene in a solution is toluene is .4 calculate the weight per cent of benzene in the solution

Answer»

TE YOUR ANSWER ISLet, mole fraction of BENZENE is X1 and that of toluene is X2 We know that, in a solution X1 + X2 =1 As X1 = 0.1 so mole fraction of toluene will be 0.5 So, each mole of the solution will have 0.5 moles of benzene and 0.5 moles of toluene.Now, we have, 1 mole of benzene (C6H6) = 78 gm so, 0.5 mole of benzene = 78 x 0.5 = 39 gmSimilarly 0.5 moles of toluene (C6H5CH3) will be = 92 x 0.5 =46 gmNow we know that weight % = mass of component / total mass of solution x 100Hence weight %age of benzene = 39/ (39 + 46) x100 = 39/85 x 100 = 41.88 %HOPE THIS HELPS ❤️PLEASE MARK AS BRAINLIEST ❤️❤️



Discussion

No Comment Found