Which chemical formula represents bisulfate?

The chemical formula for bisulfate is represented by HSO4-. This ion is derived from sulfuric acid (H2SO4), where one hydrogen ion (H+) is lost, resulting in the bisulfate ion. The name "bisulfate" indicates that it is the anion that has one hydrogen atom and carries a negative charge of one.

In terms of its relationship to other sulfate species, bisulfate can be distinguished from sulfate, which is SO4^2-, that lacks any hydrogen and carries a charge of -2. Additionally, bisulfite, represented by HSO3-, is a different species entirely that corresponds to sulfurous acid and contains a different sulfur-oxygen framework. Thus, HSO4- stands out distinctly as the correct answer for bisulfate.