Which of the following is true about buffers?
Correct answer: B. All of these
- A. pH is not affected by time
- B. All of these
- C. Have definite pH
- D. pH is not affected by dilution
Explanation
Buffers are solutions that resist the change in pH when a small amount of acid or base is added to them. They have a constant pH and their pH values do not change on dilution and with time.
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About Acids, Bases and Salts
Acid and base behaviour is explained through the Bronsted-Lowry transfer of protons and the Lewis donation or acceptance of electron pairs. The topic includes pH, pOH, ionisation and water equilibrium, plus salt formation and hydrolysis, where a salt solution may become acidic, basic or neutral.
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