Question:

Explain the difference between a strong acid and a weak acid. How does the pH of a solution change when a strong acid is added compared to a weak acid?

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A strong acid dissociates completely in water, while a weak acid only dissociates partially, resulting in different pH levels for the same concentration.
Updated On: June 02, 2025
  • A strong acid dissociates completely, while a weak acid only partially dissociates.
  • Strong acids have higher pH than weak acids.
  • Weak acids produce fewer hydronium ions than strong acids.
  • Both A and C are correct.
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The Correct Option is D

Solution and Explanation


A strong acid dissociates completely in water, releasing a higher concentration of hydronium ions (\( \text{H}_3\text{O}^+ \)) than a weak acid. This results in a lower pH for strong acids. A weak acid only partially dissociates, meaning it produces fewer hydronium ions, leading to a higher pH compared to a strong acid of the same concentration.
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