Chemistry: Auxiliary Oxidizing Agents Quiz
18 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

Why are permanganate solutions reasonably stable even though the equilibrium constant favors the products?

  • The solutions are stored in light containers.
  • The decomposition reaction is rapid.
  • The solutions are highly reactive.
  • The decomposition reaction is slow. (correct)
  • What catalyzes the decomposition of permanganate solutions?

  • Light (correct)
  • Iron
  • Oxygen
  • Water
  • Which of the following is NOT a factor that catalyzes the decomposition of permanganate solutions?

  • Acids
  • Heat
  • Alkalis (correct)
  • Manganese(II)
  • What makes permanganate solutions moderately stable?

    <p>Presence of manganese dioxide</p> Signup and view all the answers

    In what type of container should permanganate solutions be stored to maintain stability?

    <p>Dark container</p> Signup and view all the answers

    What is a key characteristic of permanganate solutions when properly prepared?

    <p>Moderate stability</p> Signup and view all the answers

    Which of the following is NOT a suitable auxiliary reducing agent for converting iron(III) to iron(II)?

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

    If a sample containing iron is dissolved, the resulting solution may contain a mixture of:

    <p>Iron(II) and iron(III) ions</p> Signup and view all the answers

    To determine the iron content using a standard oxidant, the sample solution needs to be pre-treated with:

    <p>An auxiliary reducing agent</p> Signup and view all the answers

    If planning to titrate with a standard reductant, the sample solution needs to be pre-treated with:

    <p>An auxiliary oxidizing agent</p> Signup and view all the answers

    For an auxiliary reagent to be useful, it must:

    <p>Both (a) and (b)</p> Signup and view all the answers

    Which of the following metals, when added in the presence of chloride ion, can act as an auxiliary reducing agent?

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

    What is the purpose of introducing an excess of potassium iodide in the reaction with excess bromine?

    <p>To reduce the excess bromine</p> Signup and view all the answers

    Which of the following is an example of an auxiliary reducing agent mentioned in the text?

    <p>Iron(II) ammonium sulfate</p> Signup and view all the answers

    In the permanganate-oxalate titration, what is the role of the oxalate ion?

    <p>It acts as a reducing agent</p> Signup and view all the answers

    Which of the following is NOT a sample problem mentioned in the text?

    <p>Determining the concentration of a sodium thiosulfate solution</p> Signup and view all the answers

    In the context of the text, what is the primary purpose of oxidizing agents?

    <p>To oxidize other substances</p> Signup and view all the answers

    What is the significance of the reaction between excess bromine and potassium iodide mentioned in the text?

    <p>It is used to determine the excess bromine concentration</p> Signup and view all the answers

    More Like This

    Class 12 CBSE Chemistry Handwritten Notes Quiz
    8 questions
    Chemistry and Functions of Lipids
    10 questions

    Chemistry and Functions of Lipids

    EnergyEfficientInspiration avatar
    EnergyEfficientInspiration
    Chemistry Branches Quiz
    10 questions
    Use Quizgecko on...
    Browser
    Browser