Question

Calculate the weight of water needed to codistill 1.5 g idobenzene using steam distillation.

Answer 1

The answer is attach below

ANS WER g of indobenzene Given data as = 1.5 & steam distillation, 7 know data from literature of or e-source i takon © When I odobenzene (boiling points 188.5°C) Codistills with water at 760 torr (pressure), the boiling point of the mixture Chere water & Iodobeng che) vis 98.5°C • The vapour pressure of water at 98.5°C is 724 dosyk from literature) . or Pwater = 714 torr - In mocture the boiling point is 98.5°C& at 760 tory > Means Ptoine = 760 fory l sz) Vapau bressure of Iodobenzene Protez = Pweken + zadebengere 760 torr = 7 1 4 tow & P I ODOBENZENE : 760 torr-714 toyy = IPIO DURENZEN 746 tor 46 towy

know using Dalton's law 4 and assuming that the more vdatile material occupies more vapour, than the below formula is valid. Moles of water = Moles of organic material Pwater Porganic material Mole e given or required amount Maemlar weight - formula Putting in » 714 terr Amount of water t & molecular weight of water "( Amount of I odobenzene) (molecular weight of lodobensene / 46 torr - Awount of water (204.01 ) gerett 18gnot? x 1.5g = 714 at Amount of water - Amount of water = 1.59 x 714 x 18 = 192784 46X204.01 9384.46 Amount of water = 2.0542471229 or Amount of water Ž 2.054 g) Hence, 2.054 g iodobenzene weight of water needed to codistill t. using steam distillation