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Protic Acids and Bases quiz

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  • What is the most common feature of an acid?
    The most common feature of an acid is that it possesses an H+ ion, also known as the hydrogen ion or hydronium ion.
  • What are binary acids composed of?
    Binary acids are composed of H+ connected to an electronegative nonmetal element, and they lack oxygen and usually contain no metals.
  • Give two examples of binary acids.
    Examples of binary acids include HCl (hydrochloric acid) and H2S (hydrosulfuric acid).
  • What distinguishes oxyacids from binary acids?
    Oxyacids contain H+, a nonmetal, and oxygen, whereas binary acids do not contain oxygen.
  • How are oxyacids typically formed?
    Oxyacids are typically formed by the hydration of nonmetal oxides with water, such as carbonic acid from CO2 and water.
  • What is formed when an acid neutralizes a base?
    When an acid neutralizes a base, an ionic compound called a salt is formed.
  • How are cations in salts categorized?
    Cations in salts are categorized into transition metals, main group metals, and positive amines.
  • When is a transition metal cation considered acidic?
    A transition metal cation is considered acidic if it has a charge of +2 or higher.
  • How do you determine if an anion is basic or neutral?
    Add H+ to the anion; if it forms a weak acid, the anion is basic, and if it forms a strong acid, the anion is neutral.
  • What is an amphoteric species?
    An amphoteric species is a compound that can act as either an acid or a base.
  • Name one acidic and one basic amphoteric species.
    An acidic amphoteric species is HSO4- (bisulfate), and a basic amphoteric species is HCO3- (bicarbonate).
  • What determines whether an amphoteric species is classified as acidic or basic?
    The classification depends on their Ka values and their ability to donate or accept protons.
  • What is the relationship between the strength of an acid and its conjugate base?
    If an acid is strong, its conjugate base is very weak (neutral); if the acid is weak, its conjugate base is stronger (basic).
  • What is the charge requirement for main group metal cations to be acidic?
    Main group metal cations must have a charge of +3 or higher to be considered acidic.
  • What are positive amines and how are they classified?
    Positive amines are compounds containing nitrogen and hydrogen (sometimes with carbon) that are positively charged, and they are automatically classified as acidic.