Chemistry A Level Edexcel Quiz
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Questions and Answers

What is the main purpose of a catalytic converter in a car's exhaust system?

  • To increase the engine's power output
  • To remove particulate matter from the exhaust
  • To convert harmful exhaust gases into less toxic substances (correct)
  • To improve the fuel efficiency of the engine
  • Which of the following is NOT a characteristic of a strong acid?

  • Able to completely dissociate in water
  • Has a high pH value (close to 14) (correct)
  • Can be used to neutralize basic substances
  • Produces a high concentration of hydrogen ions (H+) in aqueous solution
  • In the reaction $2Na + 2HCl ightarrow 2NaCl + H_2$, what is the limiting reactant?

  • Hydrogen gas (H2)
  • Sodium chloride (NaCl)
  • Sodium (Na)
  • Hydrochloric acid (HCl) (correct)
  • What is the purpose of using a desiccant in a sealed container?

    <p>To absorb any moisture present in the container</p> Signup and view all the answers

    Which of the following is NOT a characteristic of an ionic bond?

    <p>Involves the sharing of electrons between atoms</p> Signup and view all the answers

    Study Notes

    Catalytic Converter

    • Main purpose: to reduce emissions of harmful gases, such as carbon monoxide, hydrocarbons, and nitrogen oxides, by converting them into less harmful substances like carbon dioxide, water, and nitrogen

    Strong Acid Characteristics

    • A strong acid is characterized by: complete dissociation in water, high degree of ionization, strong tendency to donate an H+ ion, and a high concentration of hydrogen ions
    • NOT a characteristic of a strong acid: partial dissociation in water

    Limiting Reactant

    • In the reaction 2Na + 2HCl → 2NaCl + H2, the limiting reactant is the reactant that is consumed first, determining the amount of product formed
    • Identification of limiting reactant is important to calculate the maximum amount of product that can be formed

    Desiccant

    • Purpose of using a desiccant in a sealed container: to absorb moisture and maintain a dry environment, preventing damage or degradation of materials

    Ionic Bond Characteristics

    • Characteristics of an ionic bond: formed between two atoms with a large difference in electronegativity, resulting in the transfer of one or more electrons, and a strong electrostatic attraction between the ions
    • NOT a characteristic of an ionic bond: sharing of electrons between atoms

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    Description

    Test your knowledge on catalytic converters, strong acids, limiting reactants, desiccants, and ionic bonds in this Chemistry quiz for Edexcel A Level students.

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