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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