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Multiple Choice
Which of the following is not a characteristic of a strong acid?
A
Produces a high concentration of H+ ions
B
Completely ionizes in solution
C
Has a high pKa value
D
Has a low pH value
Verified step by step guidance
1
Understand the concept of a strong acid: A strong acid is one that completely ionizes in solution, meaning it dissociates fully to produce hydrogen ions (H⁺).
Recognize the relationship between ionization and H⁺ concentration: Since strong acids completely ionize, they produce a high concentration of H⁺ ions in solution.
Learn about pH values: The pH scale measures the acidity of a solution. Strong acids have low pH values because they produce a high concentration of H⁺ ions.
Understand the concept of pKa: pKa is the negative logarithm of the acid dissociation constant (Ka). A strong acid has a low pKa value because it ionizes completely, indicating a high Ka.
Identify the characteristic that does not fit: A high pKa value indicates a weak acid, as it suggests incomplete ionization. Therefore, a strong acid does not have a high pKa value.