Chemistry: Solvay Process Quiz
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Questions and Answers

What is the main principle behind the Solvay's Process for manufacturing sodium carbonate?

  • Using high pressures to dissolve sodium bicarbonate.
  • Employing high temperatures to decompose sodium bicarbonate.
  • Leveraging the high solubility of sodium bicarbonate in water.
  • Utilizing the low solubility of sodium bicarbonate at low temperatures. (correct)

    • Which of the following reactions is NOT involved in the carbonation step of the Solvay Process?

  • CO₂(g) + NH₃(g) + H₂O(l) → NH₄HCO₃(aq)
  • NH₄HCO₃(aq) + NaCl(brine) → NaHCO₃(s) + NH₄Cl(aq)
  • CaCO₃(s) → CaO(s) + CO₂(g)
  • NaHCO₃(s) + NaCl(brine) → Na₂CO₃(aq) + HCl(g) (correct)

    • What is the primary purpose of lowering the temperature in the carbonation step of the Solvay Process?

  • To accelerate the rate of the reactions.
  • To increase the solubility of NaHCO₃.
  • To prevent the evaporation of ammonia.
  • To promote the precipitation of NaHCO₃. (correct)

    • Which of the following is NOT a raw material required for the Solvay Process?

    <p>Sulfuric acid (H₂SO₄) (A)</p> Signup and view all the answers

    What compound is precipitated during the carbonation step of the Solvay Process?

    <p>Sodium bicarbonate (NaHCO₃) (D)</p> Signup and view all the answers

    Which compound is produced in the Lime Kiln?

    <p>Calcium Oxide ($CaO$) (A)</p> Signup and view all the answers

    What is the main purpose of the Ammonia Recovery Tower?

    <p>To recover and reuse ammonia ($NH_3$) (A)</p> Signup and view all the answers

    Which chemical reaction takes place in the Carbonating Tower?

    <p>$NaCl + NH_3 + CO_2 + H_2O ightarrow NaHCO_3 + NH_4Cl$ (C)</p> Signup and view all the answers

    What happens to sodium bicarbonate ($NaHCO_3$) after it is filtered?

    <p>It is heated to produce sodium carbonate ($Na_2CO_3$) (D)</p> Signup and view all the answers

    What is the primary advantage of recycling ammonia ($NH_3$) in the Solvay process?

    <p>All of the above. (D)</p> Signup and view all the answers

    Flashcards

    Solvay's Process

    A method to manufacture sodium carbonate using low-temperature bicarbonate precipitation.

    Raw Materials

    The necessary inputs for the Solvay process: NaCl, limestone, ammonia.

    Ammonical Brine

    A solution of sodium chloride dissolved in ammonia water.

    Carbonation Reaction

    The reaction of CO₂ with ammoniacal brine to form bicarbonate.

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    NaHCO₃ Precipitation

    Formation of sodium bicarbonate as a solid from solution.

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    Lime Kiln

    A furnace where calcium carbonate is heated to produce quick lime and carbon dioxide.

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    Carbonating Tower

    A tower where CO2 reacts with brine to form sodium bicarbonate.

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    Ammonia Recovery Tower

    A process to recycle ammonia by reacting it with calcium chloride.

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    Sodium Carbonate Production

    Heating sodium bicarbonate to produce sodium carbonate, CO2, and water.

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