Yes, HBr, or hydrogen bromide, is considered a strong acid. This classification comes from its ability to completely dissociate in water, releasing hydrogen ions (H+) and bromide ions (Br–). When HBr is dissolved in water, it reacts to form H+ and Br–, resulting in a low pH, characteristic of strong acids.
In the context of acid-base chemistry, strong acids are those that fully dissociate in aqueous solutions, making them more effective at donating protons compared to weak acids, which only partially dissociate. The complete ionization of HBr in solution leads to significant conductivity and vigorous reactivity, particularly with bases and certain metals.