Two different substances are electrolysed with inert electrodes in two separate experiments. Hydrogen is made in both experiments. Which row shows the two substances and the electrode where hydrogen is made?
- Asubstance 1: molten sodium chloride; substance 2: aqueous sodium chloride; electrode: anode
- Bsubstance 1: molten sodium chloride; substance 2: aqueous sodium chloride; electrode: cathode
- Csubstance 1: dilute sulfuric acid; substance 2: concentrated hydrochloric acid; electrode: anode
- Dsubstance 1: dilute sulfuric acid; substance 2: concentrated hydrochloric acid; electrode: cathode