Rate Theory and Zone Broadening in Chemistry
10 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What contributes to zone broadening in chromatography?

  • Solute concentration, column length, flow rate
  • Transverse diffusion, heat transfer, pressure effect
  • Temperature, solvent type, column material
  • Longitudinal diffusion, resistance to mass transfer, multiple path effect (correct)

    • What is the formula for band broadening due to longitudinal diffusion?

  • $HL = \frac{L1}{DMV}$
  • $HL = \frac{L1}{DM} \times V$
  • $HL = L1 + DM - V$
  • $HL = L1 \frac{DM}{V}$ (correct)

    • When is longitudinal diffusion most important in liquid chromatography?

  • When using a short column
  • At low flow rates (correct)
  • At high flow rates
  • When using a long column

    • How does an increase in velocity of the mobile phase affect band broadening due to longitudinal diffusion?

    <p>It decreases band broadening</p> Signup and view all the answers

    What does the band broadening due to longitudinal diffusion depend on?

    <p>Diffusion of the solute and the flow rate of the solute through the column</p> Signup and view all the answers

    Light waves consist of perpendicular and oscillating electric and magnetic fields.

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

    The frequency of light waves is measured in cycles per second or Hertz (Hz).

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

    Each photon of electromagnetic radiation carries the energy denoted by E=hυ.

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

    Wavenumber measures the number of waves per centimeter.

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

    The Planck's constant is approximately 6.6 x 10^-34 Joule.

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

    More Like This

    Gas Adsorption Process
    40 questions

    Gas Adsorption Process

    IndustriousHawk avatar
    IndustriousHawk
    Engineering Chemistry: Lubricants
    16 questions

    Lubricants Quiz & Flashcards: Engineering Chemistry

    ResponsiveApostrophe avatar
    ResponsiveApostrophe
    Introduction to Chemical Engineering
    16 questions

    Introduction to Chemical Engineering

    SupportingParabola avatar
    SupportingParabola
    Introduction to Chemistry for Engineers
    24 questions

    Introduction to Chemistry for Engineers

    VeritableJuniper6191 avatar
    VeritableJuniper6191
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser