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Ionic Equilibrum question

2006 · Q108
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Ionic Equilibrum question

2006 · Q108

NEETChemistryIonic EquilibrumMCQ+4 / −1
Which of the following pairs constitutes a buffer?
  1. A
    HCl and KCl
  2. B
    HNO2 and NaNO2
  3. C
    NaOH and NaCl
  4. D
    HNO3 and NH4NO3
View written solutionFree

Correct answer: B

HNO2 is a weak acid and NaNO2 is its salt thus these two constitute to form an acidic buffer.

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