The pH scale is introduced by
Correct answer: B. Sørensen
- A. Thomson
- B. Sørensen
- C. Graham
- D. Henderson
Explanation
The correct answer is Sørensen, as he introduced the concept of the pH scale in 1909. The pH scale is a measure of the acidity or alkalinity of a solution. Other options are associated with different scientific contributions: Thomson with the electron, Graham with gas diffusion, and Henderson with buffer solutions.
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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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