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Multiple Choice
Which of the following is a characteristic of a strong acid in aqueous solution?
A
It forms a weak conjugate base.
B
It partially dissociates into ions.
C
It completely dissociates into ions.
D
It has a high pH value.
Verified step by step guidance
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: When a strong acid is dissolved in water, it releases all of its hydrogen ions (H⁺) into the solution, leaving no undissociated acid molecules.
Evaluate the conjugate base: Since the acid completely dissociates, the conjugate base formed is weak because it has little tendency to re-associate with the hydrogen ions.
Analyze the pH value: A strong acid will result in a low pH value in the solution due to the high concentration of hydrogen ions.
Compare with the given options: The characteristic of a strong acid is that it completely dissociates into ions, which aligns with the correct answer provided.