What kind of chemical reaction takes place when electric current is passed through articulated water and describe the role of H₂SO₄ added during the process?
a) Electrolysis; H₂SO₄ acts as an electrolyte.
b) Combustion; H₂SO₄ acts as a catalyst.
c) Oxidation; H₂SO₄ acts as a reducing agent.
d) Substitution; H₂SO₄ acts as a solvent.
