Which substance will most likely ionize when it is dissolved in water? HBr CaBr_(2) MgCl_(2) KCl

ll the substances listed will ionize when dissolved in water, as they are all ionic compounds. However, is a strong acid and will completely ionize in water to form and ions. The other substances ( , , and ) are salts that also dissociate into their respective ions, but is specifically noted for its complete ionization as an acid. Therefore, is the substance that will most likely ionize when dissolved in water.