Physical Methods of Solution Concentration
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Questions and Answers

What is the unit of concentration that represents grams of solute per 100 grams of solution?

  • %V/V
  • %w/w (correct)
  • %w/V
  • ppm
  • What is the concentration unit that represents milliliters of solute per 100 milliliters of solution?

  • ppb
  • %V/V (correct)
  • %w/V
  • ppm
  • What is the concentration unit that represents grams of solute per 100 milliliters of solution?

  • %V/V
  • mg/mL
  • g/L
  • %w/V (correct)
  • What is the unit of concentration that represents milligrams of solute per liter of solution?

    <p>g/L</p> Signup and view all the answers

    What is the concentration unit that represents parts per billion?

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

    A 5 g alloy contains 10 mg of copper. What is the concentration of copper in ppm?

    <p>200 ppm</p> Signup and view all the answers

    What is the difference between physical and chemical methods of expressing concentration?

    <p>Physical method uses gram and its derivatives while chemical method uses chemical units.</p> Signup and view all the answers

    How many milligrams of a substance are required to prepare 500 mL of a 2000 ppb solution?

    <p>1 mg</p> Signup and view all the answers

    A 2% w/v solution of a substance means 2 grams of solute per 100 mL of solution.

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

    The physical method of expressing concentration uses chemical units.

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

    A solution with a concentration of 10 ppm has 10 milligrams of solute per liter of solution.

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

    In a volume percent (%V/V) solution, the volume of solute is specified per 100 mL of solution.

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

    A 5% w/w solution of a substance means 5 grams of solute per 100 grams of solution.

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

    The concentration of a solution can be expressed in ppm, but not in ppb.

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

    A solid-liquid solution is an example of a physical method of expressing concentration.

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

    The physical method of expressing concentration is used to express the quantity of solute in chemical units.

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

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