A strong electrolyte is an electrolyte that is completely dissociated or ionised in solution, so that essentially all of it exists as ions. Its solutions are therefore good conductors of electricity. Sodium chloride and hydrochloric acid are strong electrolytes, in contrast to a weak electrolyte, which ionises only partially.

强电解质是在溶液中完全解离或电离的电解质,因而几乎全部以离子形式存在。其溶液因此是良好的导电体。氯化钠和盐酸是强电解质;与之相对,弱电解质只能部分电离。