Final answer:
When dilute nitric acid is added to iron, it reacts to produce hydrogen gas and iron(II) nitrate in an aqueous solution.
Step-by-step explanation:
When dilute nitric acid is added to iron, a chemical reaction occurs. The nitric acid reacts with the iron, producing hydrogen gas and a compound called iron(II) nitrate, which is an aqueous solution. The balanced equation for this reaction is:
Fe(s) + 2HNO3(aq) → Fe(NO3)2(aq) + H2(g)
In this equation, Fe represents iron, HNO3 represents nitric acid, Fe(NO3)2 represents iron(II) nitrate, and H2 represents hydrogen gas.