CLEAPSS Supporting practical science and technology
PP003 - Reaction of concentrated sulfuric(VI) acid with copper metal
Sulfuric(VI) acid does not exhibit the usual properties of an acid unless it is dissolved in water. In this activity, the concentrated acid acts as an oxidising agent. Copper is oxidised to copper(II) ions. Sulfuric(VI) acid is reduced to sulfur dioxide and this can be tested for.