Diffusion vs. Effusion
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Questions and Answers

Which gas causes the strong odor in rotten eggs?

  • Hydrogen sulfide (correct)
  • Chlorine gas
  • Hydrogen peroxide
  • Sodium hypochlorite
  • Why would Helen smell hydrogen sulfide first?

  • It is less reactive
  • It is present in a higher concentration
  • It has a higher molecular weight
  • It has a lower molar mass (correct)
  • What factor primarily determines the relative diffusion rate of substances?

  • Color
  • Density
  • Temperature
  • Molar mass (correct)
  • Which law is used to calculate the relative velocities of substances in diffusion?

    <p>Graham's law</p> Signup and view all the answers

    How much longer would it take for Helen to smell sodium hypochlorite compared to hydrogen sulfide?

    <p>$1.48$ times longer</p> Signup and view all the answers

    What does Kinetic Molecular Theory assume about gas particles?

    <p>They are in constant rapid motion.</p> Signup and view all the answers

    In diffusion, the movement of atoms or molecules occurs through what kind of path?

    <p>A free path.</p> Signup and view all the answers

    According to Graham's Law, the rate of effusion of a gaseous substance is inversely proportional to what?

    <p>The inverse square root of its molar mass.</p> Signup and view all the answers

    How does the kinetic energy of gas particles affect the effusion rate?

    <p>Increases the effusion rate.</p> Signup and view all the answers

    In the context of Graham's Law, why does a helium balloon deflate over time in a room with nitrogen and oxygen?

    <p>Helium particles have a lower molar mass than nitrogen and oxygen.</p> Signup and view all the answers

    What is the main difference between diffusion and effusion?

    <p>Diffusion involves movement across a concentration gradient, while effusion involves escape through a small opening.</p> Signup and view all the answers

    Which factor does NOT influence the rate of diffusion?

    <p>Type of gases involved</p> Signup and view all the answers

    In the context of the text, what is the kinetic molecular theory?

    <p>A theory that matter is made of invisible moving particles in constant random motion.</p> Signup and view all the answers

    Why does effusion occur in gases rather than liquids?

    <p>Gases have higher kinetic energy compared to liquids.</p> Signup and view all the answers

    What is an example of effusion provided in the text?

    <p>Helium slowly escaping through a balloon's rubber barrier.</p> Signup and view all the answers

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