Acids are capable of donating the proton ion in the solution. The weak acid is incapable of dissociating completely in the aqueous solution. Thus, option C is correct.
What are weak acids?
Weak acids are the category of acids that like acids can donate hydrogen or the proton ion to other substances in the solution. Though they differ in the acidic strength which makes them incapable of dissociating their ions fully.
The weak acids cannot completely ionize themselves in water and hence shows less acidic strength than the stronger acids. They have pH between 5-7 and are incapable of dissociating completely. Acetic acid, citric acid, lactic acid, etc, are weak acids.
Therefore, option C. the weak acids do not dissociate completely in water is correct.
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