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Buffer Basics
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Buffer Basics

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Questions and Answers

What are buffers?

  • Compounds that enhance changes in pH upon the addition of small quantities of acid or alkali
  • Compounds that resist changes in pH upon the addition of small quantities of acid or alkali (correct)
  • Compounds that only work in acidic solutions
  • Compounds that only work in basic solutions

    • What is the composition of a buffer solution?

  • A weak acid and its conjugate base, or a weak base and its conjugate acid (correct)
  • A strong acid and a strong base
  • Only a weak base
  • Only a weak acid

    • What happens to the pH when 1ml of 0.1 N HCl solution is added to 100ml of pure water?

  • The pH is reduced from 7 to 3 (correct)
  • The pH becomes erratic
  • The pH remains the same at 7
  • The pH is increased from 7 to 10

    • What happens to the pH when a strong acid is added to a 0.01 M solution containing equal quantities of acetic acid and sodium acetate?

    <p>The pH changes only by 0.09 units because the base AC⁻ ties up the H⁺ ion</p> Signup and view all the answers

    What happens to the buffer solution when a strong base is added?

    <p>The equation shifts to the right, tying up OH⁻ ion</p> Signup and view all the answers

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