Acids and Bases: pH in Human Blood
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Questions and Answers

If a solution has a pH between 8 and 14, it is classified as:

  • Acidic
  • Amphoteric
  • Neutral
  • Basic (correct)
  • Which of the following substances is an example of a soluble base or alkali?

  • Carbon dioxide (CO2)
  • Sodium hydroxide (NaOH) (correct)
  • Acetic acid (CH3COOH)
  • Hydrochloric acid (HCl)
  • What is the characteristic property of alkalis?

  • They are insoluble in water
  • They release hydroxide ions (OH-) in aqueous solutions (correct)
  • They release hydrogen ions (H+) in aqueous solutions
  • They have a pH less than 7
  • Which of the following equations represents the dissociation of a soluble base in water?

    <p>NaOH → Na+ + OH-</p> Signup and view all the answers

    What is the pH range of a solution that is considered alkaline?

    <p>pH &gt; 7</p> Signup and view all the answers

    Which of the following statements correctly describes the relationship between an acid and its conjugate base?

    <p>The conjugate base has one fewer proton than the acid.</p> Signup and view all the answers

    If a diprotic acid, H₂A, ionizes completely in water, what would be the pH of the resulting solution?

    <p>pH &lt; 7.0</p> Signup and view all the answers

    Which of the following statements correctly describes the strength of a triprotic acid?

    <p>The strength of a triprotic acid depends on the values of its three dissociation constants.</p> Signup and view all the answers

    For a monoprotic acid, HA, which of the following expressions represents the acid ionization constant (Ka)?

    <p>Ka = [HA] / ([H₃O⁺][A⁻])</p> Signup and view all the answers

    If a weak acid, HA, has a Ka value of 1.0 × 10⁻⁵, what can be inferred about the strength of its conjugate base, A⁻?

    <p>The conjugate base is a weak base.</p> Signup and view all the answers

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