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Multiple Choice
Which of the following is not a characteristic of a strong acid?
A
Has a low pH value
B
Completely dissociates in water
C
Has a high pKa value
D
Produces a high concentration of H+ ions
Verified step by step guidance
1
Understand the definition of a strong acid: A strong acid is one that completely dissociates in water, meaning it releases all of its hydrogen ions (H+) into the solution.
Recognize the relationship between pH and strong acids: Strong acids typically have a low pH value because they produce a high concentration of H+ ions, which lowers the pH.
Learn about pKa values: The pKa value is a measure of the strength of an acid. A lower pKa value indicates a stronger acid, as it implies the acid dissociates more completely in water.
Identify the characteristic that does not fit: A strong acid should have a low pKa value, not a high one. A high pKa value indicates a weaker acid, as it suggests less dissociation.
Conclude which characteristic is not associated with strong acids: The statement 'Has a high pKa value' is not a characteristic of a strong acid, as strong acids have low pKa values.