1st Semester - Organic Chemistry Practical Midterm Examination 2023-2024
17 Questions
1 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 is the purpose of a burette in a laboratory setting?

  • Measuring the boiling point
  • Mixing solute with solvent
  • Measuring the melting point
  • Measuring the volume of liquid (correct)

    • Influencing factors on the boiling point include ____________, ____________, and ____________.

  • Atmospheric pressure, material composition, temperature (correct)
  • Stirring speed, time, humidity
  • Volume, color, weight
  • Glassware, temperature, pressure

    • Why is it important to determine the melting point of organic compounds?

  • To influence the boiling point
  • To measure the solubility
  • To calculate the volume of liquid
  • To identify the compound (correct)

    • What type of glassware is used for transferring solid material from a reagent bottle?

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

    Which piece of glassware has one calibration mark and is used to deliver fixed volumes of liquid?

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

    What is the main purpose of studying simple distillation in the organic chemistry lab?

    <p>To purify a compound by separating it from a non-volatile or less-volatile material.</p> Signup and view all the answers

    In simple distillation, what does the boiling point of a liquid determine?

    <p>The volatilities of the components in the mixture.</p> Signup and view all the answers

    What does miscible mean in the context of simple distillation?

    <p>Able to mix in all proportions.</p> Signup and view all the answers

    Why is it important to record the initial temperature of the solution in a simple distillation experiment?

    <p>To set a reference point for monitoring temperature changes.</p> Signup and view all the answers

    What is the significance of using a condenser in simple distillation?

    <p>To prevent loss of volatile components by cooling and condensing them back into liquid form.</p> Signup and view all the answers

    What does the final volume of the distilled solution represent in a simple distillation experiment?

    <p>The yield or quantity of purified compound obtained from the process.</p> Signup and view all the answers

    Why is the boiling temperature reduced under normal (atmospheric) pressure?

    <p>Organic fluids disintegrate before reaching the boiling point</p> Signup and view all the answers

    How does external pressure affect the boiling temperature according to the text?

    <p>It reduces the degree of boiling by boiled external and controlled pressure</p> Signup and view all the answers

    What type of impurities affect the boiling point of a compound according to the text?

    <p>Organic compounds and low temperature</p> Signup and view all the answers

    How does feeding water from the bottom in a condenser affect condensation?

    <p>It helps in achieving high cooling due to slow speed</p> Signup and view all the answers

    What happens to the condenser speed when water is fed from the top according to the text?

    <p>Speed increases leading to better cooling</p> Signup and view all the answers

    How does steam pressure correlate with temperature according to the text?

    <p>Steam pressure increases proportionally with temperature</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser