# The strong acids

## Definition

An acid $HB$ is strong if its proton exchange reaction with water (dissociation) producing the corresponding base $B$ $HB$ $+$ $H_2O$ $\rightarrow$ $H_3O^+$ $+$ $B$ is complete

- Note the single arrow reaction     $\rightarrow$ - Eventual charges of $HB$ and $B$ are not shown in this general formula

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## Common strong acids

 $HClO_4$ perchloric acid $HNO_3$ nitric acid $H_2SO_4$ sulfuric acid $HCl$ chlorhydric acid $HBr$ bromhydric acid $HI$ iodhydric acid

Dissociation reactions of these strong acids: $HClO_4$ $+$ $H_2O$ $\rightarrow$ $H_3O^+$ $+$ $ClO_4^-$ $HNO_3$ $+$ $H_2O$ $\rightarrow$ $H_3O^+$ $+$ $NO_3^-$ $H_2SO_4$ $+$ $H_2O$ $\rightarrow$ $H_3O^+$ $+$ $HSO_4^-$ $HCl$ $+$ $H_2O$ $\rightarrow$ $H_3O^+$ $+$ $Cl^-$ $HBr$ $+$ $H_2O$ $\rightarrow$ $H_3O^+$ $+$ $Br^-$ $HI$ $+$ $H_2O$ $\rightarrow$ $H_3O^+$ $+$ $I^-$