Which of the following is not the use of a buffer solution?

Correct answer: D. Predict the concentration of a substance

  • A. Use for calibration of pH meter
  • B. Use to preserve biological specimen
  • C. Maintain pH of human blood
  • D. Predict the concentration of a substance

Explanation

Buffer solutions are not used to predict the concentration of a substance. They are primarily used to maintain a stable pH. However, buffer solutions can be employed in certain analytical techniques, such as spectrophotometry, to ensure the accurate measurement of a substance's concentration by maintaining the desired pH conditions. Nonetheless, the buffer solution itself does not directly predict the concentration of the substance being analyzed.

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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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