Give an example of a substance that would be called an acid using either the..?

Question

using either the Arrhenius definition or the Bronsted Lowry definition. Explain.

Answer 1

HCL or Hydrochloric Acid

H2SO4 or Sulphuric Acid

Both are acids as per both the definitions i.e. H+ is the only positive ion produced and Proton donor conditions are satisfied.

Answer 2

Hydrochloric acid is an Arrhenius acid, because it furnishes hydrogen ions or hydronium ions in water, H3O+ + Cl-. It is also a Bronsted acid, because if one adds ammonia gas, the hydronium ion donates a proton to the ammonia molecule to form ammoinium ion, H3O+ + NH3 ===> NH4+.