The dramatic reaction between copper and nitric acid ought to be seen
The dramatic reaction between copper and nitric acid ought to be seen by all post-16 students. It provides an excellent opportunity to explain observations using the electrochemical series and makes the point that there's more to consider about an acid than its dissociated protons. As well as showing how dramatically copper reacts with nitric acid, this adapted demonstration also uses the high solubility of nitrogen dioxide to initiate a pleasing fountain.
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