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Which of the following pairs constitutes a buffer?

  1. A
    and
  2. B
    and
  3. C
    and
  4. D
    and

Solution & Step-by-step Explanation

A buffer solution typically comprises a weak acid and its conjugate base (its salt formed with a strong base) or a weak base and its conjugate acid. Here, nitrous acid () is a weak acid, and sodium nitrite () is its salt, making it an acidic buffer.

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Which of the following pairs constitutes a buffer?
A
and
B
and
C
and
D
and

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Equilibrium

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