Why is HF a weak acid, but HCl is a strong acid?
An acid is classified as strong if it dissociates in water completely to produce hydronium ions and counter anions. Strong acids have very large dissociation constants and are often not reported. Examples of strong acids are hydrochloric acid, sulfuric acid, and nitric acid.
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fromChapter 28 / Lesson 13
Learn the definition of weak acids, study common examples, discover the difference between strong and weak acids, and understand how to write weak acid equilibrium equations.