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DAT - Dental Admission General Chemistry: Acid-Base Chemistry Flashcards

6 cards from real DAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What is the pH of a solution where [H⁺] = 1 × 10⁻³ M?

    Answer: 3

    pH = -log[H⁺] = -log(10⁻³) = 3.

  2. According to the Brønsted-Lowry definition, an acid is a substance that:

    Answer: Donates a proton

    A Brønsted-Lowry acid is defined as a proton (H⁺) donor.

  3. When H₂CO₃ donates one proton, its conjugate base is:

    Answer: HCO₃⁻

    Removing one proton from H₂CO₃ produces its conjugate base HCO₃⁻ (bicarbonate ion).

  4. A strong acid in aqueous solution:

    Answer: Completely dissociates

    Strong acids dissociate completely in water, releasing all available H⁺ ions into solution.

  5. What is the pOH of a solution where [OH⁻] = 1 × 10⁻⁵ M?

    Answer: 5

    pOH = -log[OH⁻] = -log(10⁻⁵) = 5.

  6. At 25°C, the sum of pH and pOH for any aqueous solution equals:

    Answer: 14

    At 25°C, Kw = [H⁺][OH⁻] = 1 × 10⁻¹⁴, therefore pH + pOH = 14.