Types of Solutions in Pharmaceutics
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Questions and Answers

What properties characterize ideal solutions?

  • Volume shrinkage or expansion occurs when mixing constituents
  • Heat is evolved or absorbed during formation
  • Average constitutive properties of pure individual constituents (correct)
  • Non-uniform attractive forces between components

    • In an ideal solution, what happens to the volume when similar constituents are mixed?

  • Volume increases
  • Volume decreases
  • Volume remains the same (correct)
  • Volume fluctuates

    • What is the escaping tendency in a solution?

  • Uniform flow of each constituent from lower to higher concentration
  • Heat absorption by all constituents
  • Heat flow from colder body to hotter body
  • Flow of each constituent from higher to lower concentration (correct)

    • According to Raoult's Law, what is the relationship between partial vapor pressure and mole fraction in an ideal solution?

    <p>Partial vapor pressure is directly proportional to mole fraction</p> Signup and view all the answers

    What happens to the partial vapor pressure of each volatile constituent in an ideal solution according to Raoult's Law?

    <p>Equals the vapor pressure of the pure constituent</p> Signup and view all the answers

    How do ideal solutions differ from real solutions?

    <p>Ideal solutions have constitutive properties that are not averages of pure constituents' properties</p> Signup and view all the answers

    What is the term used for a mixture of two or more substances which form a homogeneous molecular dispersion?

    <p>Solution</p> Signup and view all the answers

    Which type of substances yield ions and conduct electric current through the solution?

    <p>Electrolytes</p> Signup and view all the answers

    What are substances classified as that do not yield ions when dissolved in water and do not conduct electric current?

    <p>Nonelectrolytes</p> Signup and view all the answers

    Which type of electrolyte includes substances like AgCl and Potassium acid tartarate?

    <p>Slightly soluble electrolytes</p> Signup and view all the answers

    A super saturated solution is a solution that contains __________.

    <p>More solute than it can normally hold at a given temperature</p> Signup and view all the answers

    An unsaturated solution is a solution that __________.

    <p>Can dissolve more solute at a given temperature</p> Signup and view all the answers

    What type of solution contains more of the dissolved solute than the saturation point?

    <p>Super saturated solution</p> Signup and view all the answers

    In which state of matter does solid-in-liquid solutions find the most applications in practice?

    <p>Solid-in-liquid</p> Signup and view all the answers

    What is a characteristic of an unsaturated solution?

    <p>Dissolved solute is less than that necessary for complete saturation</p> Signup and view all the answers

    How many types of solutions are possible based on the states of matter?

    <p>Nine</p> Signup and view all the answers

    What is the state of the dissolved solute in a saturated solution?

    <p>In equilibrium with solid phase</p> Signup and view all the answers

    What is essential in inducing polarity in a molecule?

    <p>Unsymmetrical distribution of electrons between atoms</p> Signup and view all the answers

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