Four substances are electrolysed with inert electrodes. Which row shows the products at the electrodes?
- Aconcentrated aqueous sodium chloride; anode: hydrogen; cathode: chlorine
- Bconcentrated hydrochloric acid; anode: chlorine; cathode: oxygen
- Cdilute sulfuric acid; anode: oxygen; cathode: hydrogen
- Dmolten lead bromide; anode: lead; cathode: bromine