Which of the following is a characteristic of a strong acid in aqueous solution?
A
It completely dissociates into ions.
B
It has a high value.
C
It forms a weak conjugate base.
D
It partially dissociates into ions.
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1
Understand the definition of a strong acid: A strong acid is one that completely dissociates into its ions in an aqueous solution.
Consider the dissociation process: In water, a strong acid will release all of its hydrogen ions (H⁺) into the solution, leaving no undissociated acid molecules.
Evaluate the pH value: Strong acids typically have low pH values, not high, because they increase the concentration of hydrogen ions in the solution.
Analyze the conjugate base: A strong acid forms a weak conjugate base because the conjugate base has little tendency to re-associate with hydrogen ions.
Compare with partial dissociation: Partial dissociation is a characteristic of weak acids, not strong acids, as weak acids do not fully ionize in solution.