Question

Carbon reacts with an acid to form carbon dioxide, water and nitrogen dioxide.

1. Name the acid used in the reaction.
2. Write a balanced chemical equation for the reaction that occurs.

Answer 1

1. The acid used is concentrated nitric acid (HNO₃).
2. The balanced chemical equation is:
   \[\ce{C + 4HNO3(conc{.}) -> CO2 + 2H2O + 4NO2↑}\]