Which acid is formed when concentrated nitric acid reacts with sulphur?

Sulphuric acid(H₂SO₄), NO₂ and water are formed when concentrated nitric acid reacts with sulphur.

Explanation

Nitric acid (HNO₃) is an oxidizing acid and it can oxidize sulfur into its higher oxidation states (+4 or +6). According to the temperature of the concentrated nitric acid solution, sulfur is oxidized to sulfur dioxide (SO₂) or sulfuric acid (H2SO₄₎ acid.

Reaction

S + 6HNO₃ → H₂SO₄ + 2H₂O + 6NO₂