Physical Pharmacy: Solubility Concepts
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Physical Pharmacy: Solubility Concepts

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Questions and Answers

What is the equivalent weight of H2SO4?

  • 98 g/mol
  • 49 g/mol (correct)
  • 24.5 g/mol
  • 196 g/mol
  • What is the number of mole equivalents of solute in 500 ml of a 0.17 M H2SO4 solution?

  • 0.17 (correct)
  • 0.085
  • 0.34
  • 0.425
  • What is the relationship between normality and molarity?

  • Normality is always twice molarity
  • Normality is always equal to molarity
  • Normality is never less than molarity (correct)
  • Normality is always less than molarity
  • What is the percentage strength (W/W) of a solution containing 5 g of boric acid in 100 g of water?

    <p>4.76%</p> Signup and view all the answers

    What is the normality of a 0.01 M H2SO4 solution?

    <p>0.02</p> Signup and view all the answers

    What is the formula to calculate the normality (N) of a solution?

    <p>N = n × M</p> Signup and view all the answers

    What is the quantitative definition of solubility?

    <p>Maximum amount of solute that the solvent can contain without separation</p> Signup and view all the answers

    What is the importance of solubility in pharmacy?

    <p>To choose the best solvent medium for a drug or combination of drugs</p> Signup and view all the answers

    What is an example of a solubility expression?

    <p>1 gm of boric acid dissolves in 18 ml of water</p> Signup and view all the answers

    What is the term used to describe the number of moles of solute in one liter of solution?

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

    How do you calculate the equivalent weight of a compound?

    <p>m.wt / valency</p> Signup and view all the answers

    What is the normality of a solution made up of dissolving 8.5 g of H2SO4 in enough water to make 500 ml solution?

    <p>2 N</p> Signup and view all the answers

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