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NEET levelSingle correct optionDifficulty 1 of 3ie120

A buffer made from a weak acid and its salt is diluted ten times with pure water. According to the Henderson equation (ideal behaviour) its pH

  1. Aremains practically unchanged
  2. Bincreases by 1 unit
  3. Cdecreases by 1 unit
  4. Dbecomes 7

Answer: A

Both and fall by the same factor, so their ratio and hence stay the same.
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