Properties of Acids and Bases Quiz
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Questions and Answers

What is a common property of acids?

  • Neutralize bases forming water and salt
  • Taste bitter
  • React with carbonates to produce CO2 (correct)
  • Change red litmus paper to blue

    • Which statement is true about bases?

  • Neutralize acids forming water and salt (correct)
  • They taste sour
  • Change blue litmus paper to red
  • Produce hydrogen ions in water

    • According to Svante Arrhenius, how are acids defined?

  • Substances that taste sour
  • Substances that neutralize bases
  • Substances that change red litmus paper to blue
  • Substances that dissociate to produce hydroxide ions in water (correct)

    • Which of the following is NOT a property of bases?

    <p>Tasting bitter</p> Signup and view all the answers

    What happens when acids react with active metals?

    <p>They release H2 gas</p> Signup and view all the answers

    Which is a characteristic of acid solutions?

    <p>Conduct electric current</p> Signup and view all the answers

    According to the Bronsted-Lowry theory, which of the following is the definition of an acid?

    <p>A substance capable of donating a proton (H+)</p> Signup and view all the answers

    Which of the following is an example of a Bronsted-Lowry base?

    <p>NH3</p> Signup and view all the answers

    What is the conjugate base of the Bronsted-Lowry acid HCO3-?

    <p>CO3^2-</p> Signup and view all the answers

    Which of the following substances is an example of an amphiprotic species?

    <p>H2O</p> Signup and view all the answers

    According to the Lewis theory of acids and bases, which of the following is the definition of a Lewis acid?

    <p>A substance that will accept a pair of electrons</p> Signup and view all the answers

    Which of the following is an example of a Lewis acid?

    <p>BF3</p> Signup and view all the answers

    Study Notes

    Properties of Acids

    • Acids taste sour
    • Acids change the color of indicators (blue litmus paper turns red)
    • Acids react with active metals, releasing H2 gas
    • Acids neutralize bases, forming water and salt
    • Acids react with carbonates to produce CO2
    • Acid solutions conduct electric current

    Properties of Bases

    • Bases taste bitter
    • Bases change the color of indicators (red litmus paper turns blue)
    • Basic solutions feel slippery on the skin
    • Bases neutralize acids, forming water and salt
    • Base solutions conduct electric current

    Arrhenius Acids and Bases

    • Acids are substances that dissociate in water to produce hydrogen ions (H+)
    • Bases are substances that dissociate in water to produce hydroxide ions (OH-)
    • Examples of Arrhenius acids and bases:
      • Acids: HC2H3O2, HCl, HNO3, H2CO3, H2SO4, H3PO4
      • Bases: KOH, NaOH, LiOH, Ba(OH)2, Ca(OH)2, Mg(OH)2, NH3

    Bronsted-Lowry Acids and Bases

    • Acids are substances capable of donating a proton (H+)
    • Bases are substances capable of accepting a proton
    • Examples of Bronsted-Lowry acids and bases:
      • Acids: HCl, HCO3-, H2PO4-, HSO4-, HF
      • Bases: H2O, NH3, PO4-3, NH4+, Cl-
    • All Arrhenius acids and bases are classified as Bronsted-Lowry acids and bases, but not all Bronsted-Lowry acids and bases are Arrhenius acids and bases

    Amphiprotic Substances

    • Amphiprotic substances are molecules or ions that can act as both acids and bases
    • Examples of amphiprotic substances: HCO3-, H2PO4-, HSO4-

    Conjugate Acid-Base Pair

    • A conjugate base is the species that results when an acid donates a proton
    • A conjugate acid is the species that results when a base accepts a proton

    Lewis Acids and Bases

    • Acids are substances that accept a pair of electrons
    • Bases are substances that donate an unshared pair of electrons
    • Examples of Lewis acids: molecules with incomplete octets, such as BF3 and AlCl3

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    Description

    Test your knowledge on the properties of acids and bases. Questions cover characteristics such as taste, reaction with indicators, metals, carbonates, conducting electric current, and neutralization reactions.

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