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The mixture that forms maximum boiling azeotrope is:

  • Option 1)

    Water + Nitric Acid

  • Option 2)

    Ethanol + Water

  • Option 3)

    Acetone + Carbon disulphide

  • Option 4)

    Heptane + Octane

The Solutions that show large negative deviation from Raoult's law from maximum boiling azeotrope at a specific combination. Nitric acid and water is the example of this class of azeotrope.  68% Nitric acid + 32% by mass with a boiling point of 393.5 K.    Option 1)Water + Nitric AcidOption 2)Ethanol + WaterOption 3)Acetone + Carbon disulphideOption 4)Heptane + Octane
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Which of the following statement about the composition of the vapour over an ideal 1:1 molar mixture of benzene and toluene is correct? Assume that the temperature is constant at 25°C. (Given: Vapour Pressur Data at 25°C, benzene=12.8 kPa, toluene=3.85 kPa)

  • Option 1)

    The vapour will contain a higher percentage of benzene

  • Option 2)

    The vapour will contain a higher percentage of toluene

  • Option 3)

    The vapour will contain equal amounts of benezene and toluene

  • Option 4)

    Not enough information is given to make a predication

 
As learnt Rault's Law - The total vapour pressure of binary mixture of miscible liquids be having ideally is given by Where   and  are mole fraction of A and B in liquid phase.     - wherein   and are vapour pressures of pure liquids.     Vapour pressure due to benzene= mole fraction of benzene in solution vapour pressure of benzene= 12.8 kPa   Vapour pressure due to toluene= mole...
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