Introduction to Group VIA & Sulfur Allotropes
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Questions and Answers

What is the main method used for mining sulfur?

  • Chemical extraction
  • Volcanic eruption
  • Hydraulic mining
  • Frasch Process (correct)

    • How is sulfur commonly found in nature?

  • As a liquid at room temperature
  • As S8 molecules in a puckered ring (correct)
  • As an alloy with iron
  • As a colorless gas

    • What are the two common allotropes of sulfur?

  • Rhombic and monoclinic sulfur (correct)
  • Amorphous and crystalline sulfur
  • Tetragonal and orthorhombic sulfur
  • Hexagonal and cubic sulfur

    • What type of solvents do rhombic and monoclinic sulfur dissolve in?

    <p>Most organic solvents</p> Signup and view all the answers

    What is commonly used to dissolve rhombic sulfur for analysis?

    <p>Carbon disulfide (CS2)</p> Signup and view all the answers

    What is the chemical reaction for the combustion of sulfur in the presence of oxygen?

    <p>S(g) + O2(g) → SO2(g)</p> Signup and view all the answers

    Which compound is formed when sulfur reacts with zinc?

    <p>ZnS(s)</p> Signup and view all the answers

    What is the colorless gas with a foul-smelling, rotten egg odor?

    <p>Hydrogen sulfide</p> Signup and view all the answers

    What does sulfur dioxide react with to form acid rain?

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

    What are the sources of sulfur dioxide as an air pollutant?

    <p>Volcanic activities</p> Signup and view all the answers

    What is the main method used for extracting sulfur?

    <p>Frasch Process</p> Signup and view all the answers

    What is the common form of sulfur that has a melting point of 112°C?

    <p>Rhombic sulfur</p> Signup and view all the answers

    Which compound is formed when sulfur reacts with iron?

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

    What solvent is often used to dissolve rhombic sulfur for analysis?

    <p>Carbon disulfide (CS2)</p> Signup and view all the answers

    Which of the following elements does sulfur NOT combine with?

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

    What is the color of most metallic sulfides?

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

    What is the color of ZnS and PbS, unlike other metallic sulfides?

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

    What happens when hydrogen sulfide dissolves in water?

    <p>Acidic solution is formed</p> Signup and view all the answers

    What type of molecule does sulfur dioxide form?

    <p>AX2E</p> Signup and view all the answers

    What is the main source of sulfur dioxide as an air pollutant?

    <p>Combustion of sulfide ores, coal, and oil</p> Signup and view all the answers

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