Recent content by zarul

  1. Z

    Problem on vapor pressureI'm stumbled

    This problem really got me. Take the vapor pressures of pure benzene and pure toluene to be 103 and 32 mm Hg. resp. The pressure on a mixture of 1 mol benzene and 1 mol toluene is reduced until half of the mixture is vaporized. What is this pressure and what are the mole fractions of the...
  2. Z

    Thermodynamics problem really confusing

    I have one more problem if you don't mind. Take the vapor pressures of pure benzene and pure toluene to be 103 and 32 mm Hg. resp. The pressure on a mixture of 1 mol benzene and 1 mol toluene is reduced until half of the mixture is vaporized. What is this pressure and what are the mole...
  3. Z

    Thermodynamics problem really confusing

    Thank you Andrew for your quick reply..As for the entropy change for the whole cycle as zero, isn't it true only in the case of reversible cycle? Is it the same for IRREVERSIBLE cycle too. Once again thks for your input..
  4. Z

    Thermodynamics problem really confusing

    A irreversible heat engine operating between heat reservoirs at 600 K and 300 K has half the efficiency of a Carnot engine. Calculate the entropy change of the working fluid in the engine which is the system, the surroundings, and the universe per cycle of the engine if 1000 J are extracted from...
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