Choose Arrhenius acids from the following compounds: HF, NH₃, H₂SO₄, SO₂, H₂S, H₂O

Arrhenius acids are substances that, when dissolved in water, increase the concentration of hydrogen ions (H⁺). From the list, HF (hydrofluoric acid), H₂SO₄ (sulfuric acid), H₂S (hydrosulfuric acid), and H₂O (water) can be considered Arrhenius acids because they dissociate to release hydrogen ions in solution. NH₃ (ammonia) and SO₂ (sulfur dioxide) are not Arrhenius acids; ammonia is a base, while sulfur dioxide can act as an acid under certain conditions but is not classified as an Arrhenius acid.

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