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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 completely dissociates into ions.
C
It partially 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 in water, meaning it releases all of its hydrogen ions (H⁺) into the solution.
Consider the concept of dissociation: In aqueous solution, a strong acid dissociates completely, forming ions. This means that the acid molecules break apart into hydrogen ions and their corresponding anions.
Evaluate the conjugate base: When a strong acid dissociates, it forms a weak conjugate base. This is because the conjugate base has little tendency to re-associate with hydrogen ions.
Analyze the pH value: A strong acid will have a low pH value in solution, as the concentration of hydrogen ions is high, leading to increased acidity.
Compare with other options: A strong acid does not partially dissociate, nor does it have a high pH value. These characteristics are typical of weak acids or basic solutions.