26 Acids and Bases 2 MCQ1

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Questions and Answers

What is the pH of a solution when [H₃O⁺] = [OH⁻]?

  • Exactly 10
  • Exactly 14
  • Exactly 7 (correct)
  • Exactly 4

What is the relationship between Kw and the concentrations of H₃O⁺ and OH⁻ ions?

  • Kw = [H₃O⁺] × [OH⁻] (correct)
  • Kw = [H₃O⁺] + [OH⁻]
  • Kw = [H₃O⁺] - [OH⁻]
  • Kw = [H₃O⁺] / [OH⁻]

What is the pH of a solution when [H₃O⁺] = 1 × 10⁻⁵ M?

  • 9
  • 7
  • 5 (correct)
  • 11

What is the pOH of a solution when [OH⁻] = 1 × 10⁻⁸ M?

<p>8 (D)</p> Signup and view all the answers

What is the pH range for the indicator Methyl Orange?

<p>3-5 (B)</p> Signup and view all the answers

What is the pH range for the indicator Phenolphthalein?

<p>8-10 (B)</p> Signup and view all the answers

What is the pH of a solution when the hydrogen ion concentration is 1 × 10⁻⁹ M?

<p>9 (A)</p> Signup and view all the answers

At what temperature is the dissociation constant of water (Kw) equal to 1 × 10⁻¹⁴?

<p>298K (A)</p> Signup and view all the answers

What is the relationship between the concentrations of H₃O⁺ and OH⁻ ions in pure water?

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

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