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Multiple Choice
Which of the following is not a characteristic of a strong acid?
A
Has a low pKa value
B
Completely ionizes in solution
C
Has a high pH value
D
Donates protons easily
Verified step by step guidance
1
Understand the definition of a strong acid: A strong acid is one that completely ionizes in solution, meaning it donates all its available protons (H⁺ ions) to the solution.
Recall the relationship between pKa and acid strength: A low pKa value indicates a strong acid because it signifies that the acid dissociates well in solution, releasing protons easily.
Consider the pH value: Strong acids have a low pH value because they increase the concentration of H⁺ ions in the solution, making it more acidic.
Evaluate the given characteristics: 'Has a low pKa value' and 'Completely ionizes in solution' are both characteristics of strong acids.
Identify the incorrect characteristic: 'Has a high pH value' is not a characteristic of a strong acid, as strong acids typically have low pH values due to their high concentration of H⁺ ions.