Physical Chemistry Lecture 2: Gas Mixtures and Solubility
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Questions and Answers

What is the nature of the surface of the adsorbent in Langmuir adsorption isotherm?

  • Uniform (correct)
  • Non-uniform
  • Soft
  • Porous

    • What is the relationship between temperature and adsorption?

  • No relationship
  • Inversely proportional (correct)
  • Directly proportional
  • Constant

    • What is the condition for a solution of liquids to obey Raoult's law?

  • Exothermic process
  • Negative deviation
  • Endothermic process
  • Ideal solutions (correct)

    • What type of intermolecular forces are formed in non-ideal solutions with negative deviation?

    <p>Strong intermolecular forces</p> Signup and view all the answers

    What is the relationship between pressure and the amount of gas adsorbed according to the Freundlich adsorption isotherm?

    <p>Proportional to the power 'n'</p> Signup and view all the answers

    What type of adsorption is described by the Freundlich adsorption isotherm?

    <p>Multilayer adsorption</p> Signup and view all the answers

    In a solution of liquids, what determines the vapor pressure of the solution?

    <p>Mole fraction of the solvent</p> Signup and view all the answers

    What is a characteristic of ideal solutions?

    <p>No heat is evolved or absorbed</p> Signup and view all the answers

    What is the total pressure of a mixture of gases, according to Dalton's law?

    <p>Pt = Pa + Pb + Pc</p> Signup and view all the answers

    What is the reason for negative deviation from Raoult's law in non-ideal solutions?

    <p>Strong new intermolecular forces</p> Signup and view all the answers

    What is the relationship between the partial pressure of a gas and its mole fraction, according to Dalton's law?

    <p>Pa = Pt × Xa</p> Signup and view all the answers

    What is the effect of temperature on adsorption?

    <p>Adsorption decreases with temperature</p> Signup and view all the answers

    What type of liquids are benzene and water?

    <p>Completely immiscible</p> Signup and view all the answers

    What is the effect of increasing temperature on the solubility of a gas in a liquid, according to Henry's law?

    <p>Solubility decreases</p> Signup and view all the answers

    What type of adsorption involves weak forces and is reversible?

    <p>Physical adsorption</p> Signup and view all the answers

    What is the effect of increasing pressure on the solubility of a gas in a liquid, according to Henry's law?

    <p>Solubility increases</p> Signup and view all the answers

    What factor affects the adsorption of a gas on a solid surface, according to the given information?

    <p>Nature of the adsorbate</p> Signup and view all the answers

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