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  3. Chemistry
  4. Which of the following pairs constitutes a buffer :-

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Q. Which of the following pairs constitutes a buffer :-

AIPMTAIPMT 2006Equilibrium

Solution:

A pair constituent with $ HNO_2 $ and $ NaNO_2 $ because $ HNO_2 $ is weak acid and $ NaNO_2 $ is a salt of weak acid $ (HNO_2) $ with strong base $ (NaOH), $ Hence it is an example of acidic buffer solution.