Bronsted-Lowry Acid-Base Theory Quiz
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Questions and Answers

Which statement accurately describes a Bronsted-Lowry acid?

  • It donates electrons to a base.
  • It accepts a proton from another substance.
  • It donates a proton to a base. (correct)
  • It remains neutral during a reaction.
  • In the Bronsted-Lowry theory, what is a base characterized by?

  • A substance that increases the concentration of hydroxide ions in solution.
  • A substance that donates electrons to the surrounding environment.
  • A substance that has no effect on the solution's acidity.
  • A substance that accepts a proton from an acid. (correct)
  • Which of the following pairs is an example of a Bronsted-Lowry acid-base reaction?

  • NH3 + H2O ⇌ NH4+ + OH− (correct)
  • H2 + Cl2 → 2HCl
  • CaCO3 + H2SO4 → CaSO4 + H2O + CO2
  • NaOH + HCl → NaCl + H2O
  • What happens during the ionization of a Bronsted-Lowry acid in water?

    <p>It donates a proton and forms a conjugate base.</p> Signup and view all the answers

    What is the conjugate base of the strong acid hydrochloric acid (HCl)?

    <p>Cl−</p> Signup and view all the answers

    Study Notes

    Bronsted-Lowry Acids

    • A Bronsted-Lowry acid is a substance that donates a proton (H+)
    • A proton is the nucleus of a hydrogen atom, which consists of a single positively charged particle

    Bronsted-Lowry Bases

    • A Bronsted-Lowry base is a substance that accepts a proton (H+)

    Bronsted-Lowry Acid-Base Reactions

    • In a Bronsted-Lowry acid-base reaction, a proton is transferred from an acid to a base
    • The acid loses a proton and becomes its conjugate base
    • The base gains a proton and becomes its conjugate acid
    • Example of a Bronsted-Lowry acid-base reaction: HCl (acid) + H2O (base) -> H3O+ (conjugate acid) + Cl- (conjugate base)

    Ionization of Bronsted-Lowry Acids in Water

    • When a Bronsted-Lowry acid ionizes in water, it donates a proton to a water molecule
    • The water molecule acts as a base and accepts the proton, forming the hydronium ion (H3O+)

    Conjugate Base of Hydrochloric Acid

    • The conjugate base of hydrochloric acid (HCl) is chloride ion (Cl-)
    • When HCl acts as a Bronsted-Lowry acid, it donates a proton (H+), leaving behind the chloride ion (Cl-)

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    Description

    Test your understanding of the Bronsted-Lowry theory with this quiz. Answer questions about the definitions of acids and bases, their characteristics, and examples of acid-base reactions. Perfect for chemistry students looking to reinforce their knowledge on this important topic.

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