An acid, such as hydrogen chloride (HCl), when added to water, dissociates into H+ and Cl- ions. This is represented by the equation:
\[ HCl_{(aq)} \rightarrow H^{+}_{(aq)} + Cl^{-}_{(aq)} \]
Here, the acid (HCl) is donating a H+ ion to the water, hence we can say
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