Flashcards on Strong and weak acids
Strong and Weak Acids: Definition, Differences, and Titration Curves
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Acid Properties
15 cards
Card 1
Question: What defines an acid?
Answer: Acids are substances that produce hydrogen ions (H⁺) when dissolved in water.
Card 2
Question: What determines the strength of an acid?
Answer: The strength of an acid is determined by the extent to which it dissociates, or ionizes, in an aqueous solution.
Card 3
Question: What is a strong acid?
Answer: Strong acids are those that completely dissociate into their constituent ions when dissolved in water.
Card 4
Question: What is the approximate concentration of H⁺ ions in a strong acid solution relative to its initial concentration?
Answer: The concentration of H⁺ ions in solution is approximately equal to the initial concentration of the strong acid because the dissociation is essentiall
Card 5
Question: Name common examples of strong acids.
Answer: Common examples of strong acids include hydrochloric acid (HCl), sulfuric acid (H₂SO₄), nitric acid (HNO₃), hydrobromic acid (HBr), hydroiodic acid (H
Card 6
Question: How does a weak acid dissociate in water?
Answer: Weak acids only partially dissociate in water; an equilibrium is established between the undissociated acid molecules and their dissociated ions.
Card 7
Question: What is the relationship between the concentration of H⁺ ions and the initial concentration of a weak acid?
Answer: The concentration of H⁺ ions in solution is significantly less than the initial concentration of the weak acid.
Card 8
Question: Name examples of weak acids.
Answer: Examples of weak acids include acetic acid (CH₃COOH), carbonic acid (H₂CO₃), hydrofluoric acid (HF), and phosphoric acid (H₃PO₄).
Card 9
Question: What is the acid dissociation constant (Ka) used for?
Answer: The acid dissociation constant (Ka) quantifies the extent of dissociation for a weak acid.
Card 10
Question: What is the expression for Ka for a generic weak acid HA?
Answer: Ka = [H⁺][A⁻] / [HA]