Dilute sulfuric acid, H₂SO₄(aq), can be electrolysed using platinum electrodes and a direct current. Hydrogen gas is produced at the cathode and oxygen gas is produced at the anode. The two gases are collected separately in burettes filled with dilute sulfuric acid placed over each electrode. [Figure showing an electrolysis setup with two inverted burettes (labelled burette 1 and burette 2) filled with dilute sulfuric acid, placed over platinum electrodes connected to a power supply. Burette 1 shows a 50.0 cm³ mark at the top and a 0.0 cm³ mark at the bottom, indicating gas collection. The electrodes are connected to positive and negative terminals.] reaction at electrode in burette 1: 2H⁺(aq) + 2e⁻ → H₂(g) reaction at electrode in burette 2: H₂O(l) → ½O₂(g) + 2H⁺(aq) + 2e⁻